Las Vegas Shooting: What We Know so Far

The death and injury count has risen, Clark County Sheriff Joe Lombardo told reporters Monday evening: 59 people have died and 527 are injured.

He added 18 firearms, explosives, and several thousand rounds of ammunition were recovered at the shooter’s home on Monday, on top of the weapons that were uncovered with the shooter in his Mandalay Bay hotel room. Electronics were also seized from the shooter’s home and are being evaluated.

Authorities later said they'd found 23 firearms in Paddock's room and 19 at his home.

In addition, Clark County has declared a state of emergency in the wake of the shooting.

We're wrapping up our live blog for the day. Thanks for sticking with us.

There’s plenty we still don't know about the massacre in Las Vegas that killed at least 59 and injured more than 500. Authorities have said those numbers could increase; meanwhile, the identifies of the victims are still mostly unknown. For continuing coverage throughout the night, check NBCNews.com and tune into MSNBC. 

Here's What We Know, as of Monday Evening

• The death toll ticked up to 59, while the number of injured rose to 527.
• Gunman Stephen Paddock had 19 firearms, several thousand rounds of ammunition and explosives in his home, according to investigators, in addition to 23 weapons found in his Mandalay Bay hotel room on the 32nd floor.
• Two Nevada gun shops confirmed that they sold firearms to Paddock in the last year and said he passed all required background checks. It's not clear whether those weapons were used in Monday's massacre.
• Paddock spent "tens of thousands of dollars" gambling in Las Vegas casinos in recent weeks, law enforcement officials told NBC News. It's unclear whether if he was winning or losing money off those large transactions.
• It took 72 minutes from the first 911 call for police to locate the shooter, NBC News reported.
• There is no apparent link between Paddock and any international terrorist groups, the FBI said.

Here's Some of What We Don't Know

• Identities of many of the 59 victims.
• Paddock's motive. In interviews with NBC News, members of his family have maintained no history of mental illness, nor any religious or political motivation.
• More about Marilou Danley, said to be Paddock's companion and roommate. She was initially named as a person of interest in the investigation, but after she was located out of the country, police said they believed she was not involved. However, the sheriff said they had more questions for her.
• How Paddock fired with such power. He seemed to use a machine gun, but machine guns are hard to come by and tightly regulated.

Two Nevada gun shops confirmed Monday that they sold firearms to Mandalay Bay shooter Stephen Paddock in the last year and said he passed all required background checks.

It was unknown if the weapons Paddock bought from the gun shops, New Frontier Armory in North Las Vegas and from Guns and Guitars in Mesquite, were used in the casino massacre.

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Magellan Health has launched a 24-hour crisis line for victims of the shooting, offering free, confidential counseling services for affected individuals dealing with grief, guilt, depression, and other feelings related to these events, the behavioral health care firm said in a press release.

Magellan's website also includes free tip sheets for things like talking with children about traumatic events.

The toll-free number is 1-800-327-7451.

The gunman's spot on the 32nd floor of the Mandalay Bay Resort and Casino gave him an unobstructed and protected view of thousands at the Route 91 Harvest festival at the Las Vegas Village, and was effectively a sniper's perch, according to MSBNC law enforcement analyst Jim Cavanaugh.

A GoFundMe campaign launched to raise money for the victims and families of the massacre has raised $1.1 million in just eight hours. 

“Funds will be used to provide relief and financial support to the victims and families of the horrific Las Vegas mass shooting​,” Clark County Commission Chairman Steve Sisolak, who established the fund, wrote on the page.

Sisolak, also a gubernatorial candidate, said he spent Sunday night with the sheriff at a local trauma center. He kicked off fundraising with a $10,000 donation. According to the GoFundMe, the Oakland Raiders also donated $50,000. 

David Becker, a Getty Images photographer, was transmitting his concert photos when a gunman opened fire on the crowd. He didn't leave when he saw people fleeing.

Instead, he got up on a table with his camera, "thinking to myself still, that this isn’t really happening, it’s just the speakers popping."

"I was trying to capture anything that was moving and that had good lighting. That was critical, it was so dark and there was limited lighting it was really hard to get a sense of what was happening," he told NBC News in a statement. 

Awareness would dawn a little later. He started editing his photos back at the media tent before eventually being escorted from the scene. 

"It was then I started looking at my photographs and what I was seeing was just unbelievable. It had been so dark outside I couldn’t see the details, I just saw a lot of people laying on the ground thinking they were playing possum, but now I could see people covered in blood and I thought, this is real. When I saw the image of the woman lying on the ground covered in blood, that was when the impact of what I was experiencing hit; when I realized people were dying."

Senate Minority Leader Chuck Schumer, D-N.Y., added his name to a growing list of Democratic lawmakers calling on Congress to pass stronger gun control laws.

“As much as we might hope to we cannot banish evil from the earth, Congress can't do that, the president can't do that,” he said from the Senate floor. “What Congress can do, what Congress must do, is pass laws to keep our citizens safe.”

“And that starts with guns, especially laws that help prevent guns, especially the most dangerous guns from falling into the wrong hands,” Schumer continued.

His impassioned remarks followed a more subdued statement from his counterpart, Senate Majority Leader Mitch McConnell, R-Ky., who also spoke from the chamber floor but did not reference guns. 

“The news we awoke to this morning was heartbreaking. What happened in Las Vegas was shocking, it’s tragic, and for those affected, and their families, it’s devastating,” McConnell said.

“I hope they will see that our country is standing by their side today,” he added. 

Pop star Ariana Grande — who experienced firsthand the terror of a tragic attack at one of her own concerts in Manchester, England, earlier this year — called Monday's shooting "terrorism" and made a plea for gun control.

“My heart is breaking for Las Vegas. We need love, unity, peace, gun control & for people to look at this & call this what it is = terrorism,” Grande tweeted Monday afternoon.

The American singer's post came just over four months after the May 22 Manchester Arena bombing that occurred right after she’d finished a concert at the venue. Children were among the 22 people killed in the suicide attack, while some 59 others were wounded, including some who suffered life-threatening injuries.

The president believes that now is not the time to talk about gun control in the immediate aftermath of the deadliest mass shooting in modern American history, the White House said Monday.

Asked about renewed pleas from lawmakers for stricter gun control measures, White House Press Secretary Sarah Huckabee Sanders said it was "premature" to talk about potential legislation before all the facts about the Las Vegas mass shooting are known.

"There's a time and place for a political debate, but now is the time to unite as a country," Sanders said, 

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It took 72 minutes from the first 911 call for law enforcement to breach the shooter’s hotel room, NBC News reports.

Police received the first call reporting shots on the country music festival at 10:08 p.m. local time. They then began searching for the source of the shooting, which was eventually determined to be coming from the Mandalay Bay hotel. Police initially began searching for the shooter on the 29th floor, working their way up to the 32nd floor where authorities say they immediately realized they were in the right place. It’s unclear how they knew, but at 11:20 p.m., police were heard blasting the door off the room where gunman Stephen Paddock was found dead, according to Las Vegas law enforcement. 

Former Rep. Gabrielle Giffords, saying she knows the "horror" of gun violence all too well, implored lawmakers on Monday to take action after the deadly mass shooting in Las Vegas.

"The nation's counting on you," Giffords said, holding up her fist to Capitol Hill behind her. She narrowly survived an assassination attempt in Tucson, Arizona, that killed and wounded multiple constituents. 

Her husband, retired astronaut Mark Kelly, urged Congress to create a committee to investigate gun violence as a public health crisis and roll out policies to prevent civilians from procuring military-grade weapons and "keep guns out of the wrong hands."

"Without action, we are asking one person to be the next person to die because of our weakness to address evil," Kelly said. "How many times can we say that over and over again: ‘Now’s not the time.’ Well, today is the time."

He also took aim at Trump, saying, "Americans need more than our president's prayers, we need his plans."

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The father of Las Vegas gunman Stephen Paddock was on the FBI’s Top 10 Most Wanted list, the agency confirmed to NBC News.

Patrick Benjamin Paddock, also known as Benjamin Hoskins Paddock, was wanted by the agency for escaping from prison in 1968, where he was incarcerated for armed bank robbery. He was diagnosed as psychopathic, with suicidal tendencies. 

He was bumped from the most-wanted list in 1977, according to the FBI's website.

One of the shooter’s brothers, Bruce Paddock, said that while their father was a bank robber, Stephen was “law abiding.” 

"He never got into fights. He never did anything violent. He's kinda laid-back, never in a hurry,” Bruce told NBC News. "I don't know how he could stoop to this low point, hurting someone else … He killed a bunch of people and then killed himself so he didn't have to face whatever it was."

Paddock added that his brother was “not mentally deranged. He's quite smart.”

House Minority Leader Nancy Pelosi, D-Calif., called on House Speaker Paul Ryan, R-Wis., to create a select committee to examine gun violence in America in a letter Monday afternoon following the deadly mass shooting in Las Vegas. 

The longtime California lawmaker said gun violence challenges "the conscience of our nation" and Congress should pass gun background check legislation and create a bipartisan committee to provide policy recommendations to reduce gun violence. 

"Congress has a moral duty to address this horrific and heartbreaking epidemic," Pelosi said. "Charged with the solemn duty to protect and defend the American people, we must respond to these tragedies with courage, unity and decisive action." 

Read the full letter here. 

There is no apparent link between shooter Stephen Paddock and any international terror groups, the FBI said on Monday.

ISIS claimed credit for the incident — the worst mass shooting in modern American history — but the terror group has in the past taken credit for events in which they had no role.

The NRA’s political action committee, the NRA-PVF, postponed an ad buy in Virginia that had been scheduled to begin Tuesday, a source familiar with the buy told NBC News.

The source requested anonymity because she was not authorized to speak publicly about the group's buys.

The news, however, comes just hours after the Las Vegas shooting.

The source said that the NRA-PVF’s scheduled ad buy did not pertain to the Virginia governor’s race, in which Democratic candidate Ralph Northam has pushed an anti-gun violence message, and that the buy was supposed to run last week and had already been moved around several times.

News of an ad buy postponement by the NRA was first reported by Medium Buying, LLC., a firm that tracks ad buys.

“VA-Gov: NRA-PVF TV ad spending that was scheduled to start tomorrow has been postponed. New start date is 10/10,” the firm tweeted Monday.

An NRA spokesperson told NBC News that the group would not comment on any ad buy postponement. 

University Medical Center of Southern Nevada is just three miles from the site of the shooting, where more than 500 were injured at an outdoor music festival. Thanks to its status as a Level 1 trauma center, the hospital's full trauma team was already onsite when victims began to pour in.

"We did receive 104 patients after the shooting last night. Even for our Level 1 trauma center, that's quite a few patients," the hospital's Chief Experience Officer Danita Cohen told MSNBC.

A Level 1 designation means 24-hour coverage by general surgeons and prompt availability of specialist care, according to the American Trauma Society. 

Cohen said the hospital received some of the most grievously injured victims. Four have died at the hospital while 12 are in critical condition, each attended to by a dedicated nurse, she said.