The Latest: US official: Shooter may have hired prostitute

Cece Navarrette places flowers at a cross for her cousin, Bailey Schweitzer, who was among those killed during the mass shooting Friday, Oct. 6, 2017, in Las Vegas. A gunman opened fire on an outdoor music concert on Sunday killing dozens and injuring hundreds.(AP Photo/Gregory Bull)
This undated photo provided by Eric Paddock shows his brother, Las Vegas gunman Stephen Paddock. On Sunday, Oct. 1, 2017, Stephen Paddock opened fire on the Route 91 Harvest Festival killing dozens and wounding hundreds. (Courtesy of Eric Paddock via AP)
This photo combination shows some of the victims of the mass shooting that occurred at a country music festival in Las Vegas on Sunday, Oct. 1, 2017. Top row from left are: Heather Warino Alvarado, Steven Berger, Denise Burditus, Sandy Casey, Andrea Castilla, Denise Cohen, Austin Davis and Tom Day Jr. Second row from left are: Stacee Etcheber, Brian Fraser, Keri Lynn Galvan, Dana Gardner, Angie Gomez, Rocio Guillen, Charleston Hartfield and Nicol Kimura. Third row from left are: Jessica Klymchuk, Rhonda LeRocque, Kelsey Meadows, Calla Medig, Sonny Melton, Adrian Murfitt, Rachael Parker and John Phippen. Bottom row from left are: Melissa Ramirez, Jordyn Rivera, Quinton Robbins, Bailey Schweitzer, Laura Shipp and Brennan Stewart. (AP Photo)
Clark County Coroner John Fudenberg updates the media on the status of the work his bureau is handling in the wake of a mass shooting on Thursday, Oct. 5, 2017, in Las Vegas. Stephen Paddock opened fire on an outdoor music concert on Sunday killing dozens and injuring hundreds. (AP Photo/John Locher)
Clark County Sheriff Joe Lombardo listens to a question during a media briefing at Metro Police headquarters in Las Vegas Wednesday, Oct. 4, 2017. Investigators trying to figure out the Las Vegas gunman, Stephen Paddock's state of mind have so far been stymied by the secret life he appeared to lead before the attack on a country music concert on the Las Vegas Strip Sunday. (Steve Marcus/Las Vegas Sun via AP)
A man pauses at a memorial for the victims of a mass shooting in Las Vegas, Wednesday, Oct. 4, 2017, in Las Vegas. Stephen Paddock opened fire on an outdoor music concert on Sunday killing dozens and injuring hundreds. (AP Photo/Marcio Jose Sanchez)
This undated photo provided by the Las Vegas Metropolitan Police Department shows Marilou Danley. Danley, 62, returned to the United States from the Philippines on Tuesday night, Oct. 3, 2017, and was met at Los Angeles International Airport by FBI agents, according to a law enforcement official. Authorities are trying to determine why Stephen Paddock, Danley's boyfriend, killed dozens of people in Las Vegas Oct. 1, in the deadliest mass shooting in modern U.S. history. (Las Vegas Metropolitan Police Department via AP, File)
Aaron Rouse, special agent in charge of the Las Vegas Division of the FBI, responds to a question during a media briefing at Metro Police headquarters in Las Vegas, Wednesday, Oct. 4, 2017. Investigators trying to figure out the Las Vegas gunman, Stephen Paddock's state of mind have so far been stymied by the secret life he appeared to lead before the attack on a country music concert on the Las Vegas Strip Sunday. (Steve Marcus/Las Vegas Sun via AP)
Alyssia Washington, 24, of Flint, Mich., gasps aloud as she tries to hold back tears while names of identified victims from the Las Vegas mass shooting are read aloud, while standing in a circle of more than 50 University of Michigan-Flint students and faculty members during a vigil at the McKinnon Plaza on campus Wednesday, Oct. 4, 2017 in downtown Flint. (Jake May/The Flint Journal-MLive.com via AP)
The marquee at the W Hotel shows a sign for the victims of a mass shooting on Wednesday, Oct. 4, 2017, in Las Vegas. Stephen Paddock opened fire on an outdoor music concert on Sunday killing dozens and injuring hundreds. (AP Photo/John Locher)
Chicago Police Bureau of Organized Crime Chief Anthony Riccio speaks at a news conference accompanied by Mayor Rahm Emanuel, Thursday, Oct. 5, 2017, in Chicago. Riccio says there will be "significantly" more undercover officers working during Sunday's Chicago Marathon than in years past after a gunman opened fire on an outdoor music festival in Las Vegas earlier this week. He says the department will increase the number of undercover officers working Monday night when the Bears play at Soldier Field and next week when the Cubs return to Wrigley Field for the National League playoffs. (AP Photo/Teresa Crawford)
The Blackstone Hotel sits on Michigan Avenue across the street from Chicago's Grant Park on Thursday, Oct. 5, 2017, in Chicago. Stephen Paddock, opened fire on an outdoor music concert on Sunday, Oct. 1, killing dozens and injuring hundreds in Las Vegas. In August, Paddock, booked a room at the Blackstone Hotel that overlooks the park where the Lollapalooza music festival was held that weekend, a law enforcement official said Thursday, Oct. 5, 2017. (AP Photo/Charles Rex Arbogast)
The Blackstone Hotel, left, sits on Michigan Avenue, across the street from Chicago's Grant Park on Thursday, Oct. 5, 2017, in Chicago. Stephen Paddock, opened fire on an outdoor music concert on Sunday, Oct. 1, killing dozens and injuring hundreds in Las Vegas. In August, Paddock, booked a room at the Blackstone Hotel that overlooks the park where the Lollapalooza music festival was held that weekend, a law enforcement official said Thursday, Oct. 5, 2017. (AP Photo/Charles Rex Arbogast)
Sherri Camperchioli, left, and Jordan Cassel help set up some of the crosses that arrived in Las Vegas today to honor the victims of the mass shooting on Thursday, Oct. 5, 2017, in Las Vegas. A gunman opened fire on an outdoor music concert on Sunday killing dozens and injuring hundreds. (AP Photo/Gregory Bull)
Cece Navarrette places flowers at a cross for her cousin, Bailey Schweitzer, who was among those killed during the mass shooting Friday, Oct. 6, 2017, in Las Vegas. A gunman opened fire on an outdoor music concert on Sunday killing dozens and injuring hundreds.(AP Photo/Gregory Bull)
Crosses sit in honor of those killed during the mass shooting Friday, Oct. 6, 2017, in Las Vegas. A gunman opened fire on an outdoor music concert on Sunday killing dozens and injuring hundreds.(AP Photo/Gregory Bull)
A woman passes crosses for victims of the mass shooting Friday, Oct. 6, 2017, in Las Vegas. A gunman opened fire on an outdoor music concert on Sunday killing dozens and injuring hundreds.(AP Photo/Gregory Bull)
Cece Navarrette sits near a cross for her cousin, Bailey Schweitzer, who was among those killed during the mass shooting Friday, Oct. 6, 2017, in Las Vegas. A gunman, Stephen Paddock, opened fire on an outdoor music concert on Sunday killing dozens and injuring hundreds.(AP Photo/Gregory Bull)
Shelley Boyle, left, and Cece Navarrette sit among crosses for those killed during the mass shooting Friday, Oct. 6, 2017, in Las Vegas. A gunman opened fire on an outdoor music concert on Sunday killing dozens and injuring hundreds. A cousin of Navarrette is among those killed. (AP Photo/Gregory Bull)

LAS VEGAS — The Latest on the mass shooting in Las Vegas (all times local):

5 p.m.

A U.S. official says investigators believe the Las Vegas shooter may have hired a prostitute in the days before the shooting, and they are interviewing other call girls as they look for clues into his motive.

The official said Friday that prostitutes are among the hundreds of leads they are pursuing as part of their investigation into Stephen Paddock.

The official, who was briefed by federal law enforcement officials, wasn't authorized to discuss the matter publicly and spoke to The Associated Press on condition of anonymity.

The official says a note containing a series of numbers was found on a nightstand in Paddock's room at the Mandalay Bay hotel after the shooting.

The official also says that Paddock had taken at least a dozen cruises out of the U.S. in the last few years, most with his girlfriend Marilou Danley. The official said at least one of the cruises was to the Middle East.

___

3:15 p.m.

Las Vegas shooter Stephen Craig Paddock's anti-social personality will only hamper investigators as they try to figure to piece together what led to the shooting.

"It's extremely difficult," said Erroll Southers, the director of homegrown violent extremism studies at the University of Southern California.

"The lack of a social media footprint is likely intentional," Southers said. "We're so used to in the first 24 to 48 hours being able to review social media posts. If they don't leave us a note behind or a manifesto behind, and we're not seeing that, that's what's making this longer.

"What's really puzzling is that we've seen him with similar kinds of activity — booking rooms in other places — so you have to ask yourself the reason he picked Las Vegas and not somewhere else."

Paddock fired indiscriminately Sunday from his upper-level room at the Mandalay Bay hotel casino at people attending a country music festival below, killing dozens and injuring nearly 500 people. The 64-year-old Paddock killed himself as authorities closed in.

Because so few people knew Paddock well, investigators will likely have an even harder time sorting through his background to try to uncover any possible leads, Southers said.

"You don't have any cases of leakage — no one to say who's he mad at, what his motive is," Southers said. "The key to this case right now is the girlfriend."

"The reason you want to engage in a terror attack is you want to bring attention to an extremist ideology, you want publicity," he said. "You want people to be afraid of what you believe what you do."

___

1:35 p.m.

Authorities are planning to put up billboards in Las Vegas to seek more tips as they investigate the deadliest shooting rampage in modern U.S. history.

Undersheriff Kevin McMahill also revealed at a news conference Friday afternoon that police are confident there was not another shooter in Stephen Paddock's room.

Paddock fired indiscriminately Sunday from his upper-level room at the Mandalay Bay hotel casino at people attending a country music festival below, killing dozens and injuring nearly 500 people. The 64-year-old Paddock killed himself as authorities closed in.

McMahill also said that authorities don't have any information that anyone else used Paddock's room key.

He says authorities are interested in Paddock's medical history and are looking into that.

___

1:20 p.m.

Authorities say they still don't have a clear motive for the Las Vegas shooting rampage.

Undersheriff Kevin C. McMahill provided an update on the investigation Friday. He says authorities have looked at gunman Stephen Paddock's personal life, political affiliation, economic situation and any potential radicalization.

He says authorities are aware the Islamic State group has claimed responsibility for the attack, but so far there is no evidence that it had a role.

He says authorities will continue to investigate those areas as well as look into leads and tips that come in.

Paddock unleased gunfire Sunday from the 32nd floor of the Mandalay Bay hotel casino on the Las Vegas Strip, killing dozens and injuring nearly 500 people. He killed himself as police closed in.

___

12:10 p.m.

Massachusetts could be moving quickly to outlaw so-called "bump stock" devices used by the Las Vegas shooter.

Democratic and Republican lawmakers have both filed bills to ban the devices. Republican Gov. Charlie Baker said he supports a ban.

The devices fit over the stock and grip of a semi-automatic rifle and allow the weapon to fire continuously, some 400 to 800 rounds in a single minute.

State Rep. David Linsky, a Natick Democrat, has filed legislation that would outlaw any devices that increase the rate of discharge of a weapon and ban the sale of large capacity-feeding devices.

Republican Senate Leader Bruce Tarr of Gloucester has sponsored a bill that would prohibit devices that effectively turn rifles and shotguns into weapons with firing capabilities similar to machine guns.

___

11:40 a.m.

Scott Armstrong, a Reno, Nevada, car dealer, said Paddock confided in him about relationship troubles when the would-be gunman stopped in looking to buy a car about two months ago.

"Somehow or another we ended up talking about bad relationships, and he confided that he was depressed and his life was miserable," Armstrong said. "It just struck me as really odd that somebody would say that."

Paddock, unshaven and dressed casually but not disheveled, didn't elaborate on his relationship troubles, and Armstrong didn't pry. He didn't smile, and he "wasn't very pleasant to talk to," he said.

"I could tell he was really down or something," Armstrong said. "I just told him, I said, 'Hey I've been in some bad relationships myself. It'll get better. Tomorrow will be a better day than today.' "

Armstrong said he's talked with FBI agents about his recollection.

Others who have interacted with Paddock have described him as a quiet and confident man who did not engage in deep conversations. Armstrong said he's baffled by why he was so open with a stranger, but "my job is to put people with ease and try to help them buy a car."

How is he so certain Paddock is the downtrodden man who visited him?

"When's the last time somebody told you their life was miserable? It sticks with you," he said

___

11:20 a.m.

A gun show that was scheduled to take place this weekend in a casino off the Las Vegas Strip has been canceled following last Sunday's mass shooting.

Boyd Gaming Corp. spokesman David Strow said Friday the decision to cancel the gun show at the Eastside Cannery Casino was made mutually with the show's promoter, Western Trails Show Promotions.

It was scheduled to take place on Saturday and Sunday and has been held at least five times in the past.

Dozens of people were killed and hundreds were injured Sunday night when Stephen Paddock opened fire from the windows of his 32nd floor hotel room and rained bullets on a country music festival attended by thousands.

___

10:20 a.m.

A law enforcement official says Las Vegas shooter Stephen Paddock bought 1,000 rounds of tracer ammunition a month ago from a private seller he met at a Phoenix gun show.

The official says investigators searching the hotel room Paddock used as a sniper's perch found tracer rounds and a document with the name of the Mesa, Arizona, man who sold him the ammunition.

The official is involved in the shooting investigation and spoke anonymously because the official was not authorized to disclose case information.

Tracer bullets contain a pyrotechnic charge that illuminates the path of fired bullets so shooters can see whether their aim is correct.

The official says Paddock met the man in Phoenix on Sept. 9 and 10 and that the sale took place at the man's Mesa home.

The tracer ammunition that Paddock bought were .308-caliber and .223-caliber rounds.

The official did not know whether Paddock used tracer rounds during the attack.

The official declined to identify the seller.

___

9:30 a.m.

Some New York state lawmakers want to make it illegal in the state to buy, sell or possess devices known as bump stocks that allow semi-automatic rifles to mimic the rapid fire of automatic weapons.

Authorities found 12 of the devices fitted to guns in the hotel room of Las Vegas shooter Stephen Paddock.

It is illegal to use bump stocks in New York state but a loophole in the law makes it legal to buy, sell or possess the devices.

Legislation introduced this week would immediately ban bump stock sales and prohibit possession of them over time.

Democratic Assemblywoman Pat Fahy of Albany says it's illogical to allow the sale and possession of a device that cannot be used legally.

The bill has bipartisan support. Lawmakers will reconvene in Albany in January.

___

7:15 a.m.

Boston Police Commissioner William Evans says authorities will step up security for concerts and sporting events in the city following the shooting in Las Vegas.

Officials have said there is no credible threat to Boston.

But Evans said the FBI told him Wednesday that agents turned up evidence that Las Vegas shooter Stephen Paddock researched sites in and around Fenway Park and the Boston Center for the Arts.

The Red Sox have said they're working with officials to beef up security.

Evans said security would be boosted for events including a Bruno Mars concert, a City Hall Plaza concert, road races and Red Sox games.

He says police also plan to meet with hotel officials in coming days to discuss ways for them to increase security.

___

12:13 a.m.

Australian police are assisting their U.S. counterparts on the investigation into Las Vegas shooter's girlfriend Marilou Danley.

The Australian Broadcasting Corporation reports that Philippines-born Danley became an Australian citizen after moving to the Gold Coast in Queensland state and marrying a local man. ABC says she lived there for some 10 years until the late 1980s.

Australian Federal Police Commissioner Andrew Colvin said Friday that as an Australian citizen, Danley was entitled to consular assistance.

Australian police and government officials have not elaborated on Danley's time or citizenship in Australia.

Colvin says the Australian authorities are "working very closely with our partners in the U.S."

Australia's foreign affairs department said Friday it is aware she is "a person of interest" and described her case as "a matter for U.S. law enforcement."

___

12:01 a.m.

Investigators are probing the Las Vegas gunman's interest in other music festivals in the months before he killed 58 people and injured nearly 500 at an outdoor country concert.

They say Stephen Paddock rented rooms in high-rises overlooking the Lollapalooza festival in Chicago in August and over the Life is Beautiful festival near the Vegas Strip in September. Boston police say Fenway Park has come up in the investigation, but didn't elaborate.

On Thursday night, thousands gathered in Las Vegas to honor one of the victims who was killed, Officer Charleston Hartfield.

Hartfield was also a husband and father of two, and an Iraq War veteran.

His friend Sgt. Ryan Fryman told the crowd Hartfield was "the greatest American I have ever known."

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