UPDATE: Suspect identified, Las Vegas shooting deadliest ever in U.S., 50+ dead, over 500 injured

10:54 a.m. PT:

• FBI has indicated that there were no ties between the suspect, 64-year-old Stephen Paddock, and international terrorist organizations.
• Trauma counselors have been called in by Mandalay Bay Resort.
• Police have found Marilou Danley who is believed to have been travelling with Paddock.

3:58 a.m. PT:

• Reports now confirm that more than 50 people have died as a result of the overnight shooting in Las Vegas. This makes the shooting the deadliest in U.S. history, surpassing the Orlando Pulse nightclub shooting in 2016.

The assailant has been identified as Stephen Paddock, 64, a resident of Mesquite, Nevada. Police have confirmed the suspect was known to them, and this does not appear to be an incident of terrorism. Terrorism or not, it is certainly terrifying.

At least one assailant with an automatic weapon opened fire on crowds at the Las Vegas Strip late Sunday night. The Route 91 Harvest Music Festival outside the Mandalay Bay Resort has been verified as a target, though reports of other venues hit by attacks are still coming in.

1:49 a.m. PT:

Videos posted to social media sound like war zones as magazine after magazine are emptied into crowds. Early reports indicate at least 20 dead and over 100 injured. The suspected shooter, a Las Vegas local, was reported as “down” by the Las Vegas Police Department. He has been confirmed killed.

Reports indicate the gunfire came from a room on the 32nd floor of the Mandalay Bay. SWAT officers who entered the room reported multiple weapons were present.

There are three individuals currently being held by authorities, though their suspected involvement has not been released. Another person of interest, Marilou Danley, is being sought by police. Her M-Life Gold Card was found in the suspect’s room.

This is a developing story. We will be monitoring multiple sources and posting updates throughout the night. Scroll down for social media posts.

Reports

Las Vegas gunman suspect is Stephen Paddock, 64, of Mesquite, Nevada: NBC News

The suspected gunmen in the Las Vegas shooting has been identified as 64-year-old Stephen Paddock from Mesquite, Nevada, according to NBC News.

More than 20 killed, 100 wounded in Las Vegas Strip shooting – Las Vegas Review-Journal

Sheriff Joe Lombardo confirmed that more than 20 people were killed and more than 100 were injured in a shooting Sunday night outside Mandalay Bay on the Las Vegas Strip.

Jason Aldean on stage when shots rang out near Mandalay Bay | Fox News

One witness told Fox News that Aldean rushed off the stage as soon at the gunshots went off. The gunshots were heard at about 10 p.m. local time near Mandalay Bay Hotel and Casino.

Las Vegas Shooting Near Mandalay Bay Casino Sends People Fleeing

Reports said that the shooting happened near the Mandalay Bay Resort and Casino. It was not immediately known how many people were injured. Video posted online showed a musician performing outside the hotel at Route 91 Harvest, a country music festival, when the sound of automatic gunfire rang out. The music stopped, and concertgoers ducked for cover. “Get down,” one shouted. “Stay down,” screamed another.

Police Looking for Companion of Dead Gunman

Concert-goers reported seeing muzzle flashes from the upper floors of the Mandalay Bay across Las Vegas Boulevard from the country music festival and the sound of what they described as automatic gun fire.

Las Vegas strip shooting: More than 20 dead, 100 injured after gunman opens fire near Mandalay Bay casino – ABC News

Videos filmed by onlookers gave a window into the chaos that ensued, with some thinking that fireworks were going off. The final night of the Route 91 Harvest Music Festival was taking place across the street from Mandalay Bay when the shooting took place and concertgoers were caught off-guard.

Kind strangers help Las Vegas victims by carrying them on make-shift barrier stretchers moments after shooting – Mirror Online

Bloodied people on makeshift stretchers were scattered across the road and one man even appeared to ferry another wounded victim in a wheelbarrow during the harrowing footage.

At least 20 dead, more than 100 injured in shooting near Mandalay Bay casino, 1 suspect ‘down’ | Fox News

The scene on the ground was chaotic. Aldean was performing his last song of the night, when shots rang out. Initially, those in attendance said they thought the sound was firecrackers. But as the shots continued, Aldean stopped singing and some concertgoers could be heard yelling to each other to get down.

Las Vegas Shooting: Route 91 Harvest Fest Shooter Dead

CNN reports that the gunman fired from the 32nd floor of Mandalay Bay Hotel and Casino, where Clark County Sheriff Joseph Lombardo says officers confronted the suspect. Authorities say the man is dead, reports ABC News, and Lombardo states that the gunman was a “lone actor” in the shooting.

Las Vegas shooting: Gunman opens fire at Mandalay Bay | Daily Mail Online

At least 20 people have been killed, including at least two police officers, and more than 100 injured after at least one gunman unloaded hundreds of rounds of ammo on a Las Vegas country music festival on Sunday night. There were 30,000 people in attendance at the event.

Social Media

VIDEO: Media briefing earlier by @Sheriff_LVMPD regarding the active shooter incident on the Strip. https://t.co/1D7ziLF7ut #LVMPDnews

— LVMPD (@LVMPD) October 2, 2017

Now We need to unite and start fight against terrorism !!
Stay Safe Las Vegas !#MandalayBaypic.twitter.com/Ll8omKIwbd@lelepons

— Anni (@anas_hussain13) October 2, 2017

Briefing with @Sheriff_LVMPD regarding the Strip shooting. At least 20 dead, 100 injured. The shooter was local. pic.twitter.com/CzxRl9Oagw

— LVMPD (@LVMPD) October 2, 2017

Terrorist attack at Las Vegas👇🏿😟#MondayMorning pic.twitter.com/U5KYL4fzGA

— ((((Hawks)))) (@rhollister57) October 2, 2017

LAS VEGAS LATEST: Suspected accomplice still on the run. Belief system of shooter still unknown. pic.twitter.com/zNWArUbPzk

— Fox & Friends First (@FoxFriendsFirst) October 2, 2017

The scene looking down Las Vegas Boulevard, huge medic tent to the left with lots of people going through #breaking #RJnow pic.twitter.com/PB8LNSOXX2

— Chase Stevens (@CSStevensphoto) October 2, 2017

Active shooter Las Vegas strip I'm ok locked in my room lights off windows closed. Shooter is directly across the street. Shots heard on vid pic.twitter.com/Z4mz3E3bmE

— Bryan Heifner (@HBryanBHHS) October 2, 2017

JUST IN: Las Vegas police say more than 20 people are confirmed to have died "at this point," more than 100 injured https://t.co/era0uuA7XS pic.twitter.com/2DmcLsFeKo

— ABC News (@ABC) October 2, 2017

.@LVMPD: Marilou Danley, is being sought for questioning for the investigation into the Las Vegas shooting https://t.co/oSjaEv6V92 pic.twitter.com/cG4RI7SIsQ

— Fox News (@FoxNews) October 2, 2017

BREAKING: There was a tragic active shooter situation at the south end of the Las Vegas Strip. Shooter shot from 32nd floor of Mandalay Bay. pic.twitter.com/v1bOrL8ToE

— The Trump Train (@The_Trump_Train) October 2, 2017

Shooting in Las Vegas. People fleeing (video from the Mandalay Bay hotel) pic.twitter.com/hs98J5uK6T

— Eiki Hrafnsson (@EirikurH) October 2, 2017

They've got us down and taking cover now on the corner, not sure what's happening pic.twitter.com/GEb9NkdB0f

— Max Michor (@MaxMichor) October 2, 2017

VIDEO: Rapid fire from shooter(s) in Las Vegas pic.twitter.com/jgzCTQRUZP

— Joel Franco (@OfficialJoelF) October 2, 2017