Editor’s note: this article has been updated to include new information that the hotel security guard was shot before the gunman opened fire, rather than after as police initially stated.
In the worst mass shooting in U.S. modern history, 64-year-old Stephen Paddock opened fire on a concert with 22,000 attendees. Fifty-nine people were killed and 527 more were injured.
Here’s a look at how it unfolded. (All times are in local, pacific time.)
Sept 28:
Stephen Paddock checks into the Mandalay Hotel. He’s given a suite on the 32nd floor.
Oct. 1:
Around 9:40 p.m. – Jason Aldean begins his set at the Route 91 Harvest Festival, which is about 300 metres from the Mandalay hotel.
9:59 p.m. – A hotel security guard was checking a door security alarm on the 32nd floor of the hotel when Paddock shoots through the door and wounds him in the leg.
Just after 10 p.m. – Shots ring out from a hotel room window, that has been smashed open.
At first, people think it’s part of the show. Aldean reportedly stopped playing for a short time. More gunshots ring out before people realize it’s an attack.
10:08 p.m. – First 911 call of the shooting.
Witness accounts describe a scene of panic.
Jackie Hoffing told the Guardian: “It was hysteria. There were people trampled. We jumped walls, climbed cars, ran for our lives. I’ve never run that hard or been that scared in my whole life.”
More than 100 people are transported to hospital.
WATCH: Canadian concertgoers describe the scene
Around 10:30 p.m. – A team of police officers coordinate with hotel security and start searching for the gunman, floor by floor, Sheriff Joe Lampardo confirmed.
11:20 – SWAT teams are sent to the room in question. They blow the door open with explosives, and find Paddock dead from a gunshot wound. He was found with around 16 guns.
10:38 p.m. – Police confirm the shooting and that they are investigating.
11:08 p.m. – Las Vegas police shut down a portion of the Strip. Hotels are on lockdown. Concertgoers are stranded.
Oct. 2:
12:01 a.m. – Police tell the public the suspect is “down.”
12:55 a.m. – Police say there is no threat of another shooter.
Early morning – Police officers search Paddock’s home in Mesquite, Nev. It was later revealed they found 18 guns, thousands of rounds of ammunition and explosives.
3:30 a.m. – Las Vegas sheriff confirms 50 people dead in the shooting, making it the worst mass shooting in modern U.S. history.
4:33 a.m. – Police reveal the identity of the shooter as Stephen Paddock.
READ MORE: What we know about gunman Stephen Paddock
4:11 a.m. – U.S. President Donald Trump tweets “My warmest condolences and sympathies to the victims and families of the terrible Las Vegas shooting. God bless you!”
Morning – The names of the victims slowly start coming out. It’s confirmed that at least two Canadians are among them. Two off-duty police officers are also among the victims.
7:50 a.m. –Donald Trump makes a statement, calling the shooting “an act of pure evil.”
1:45 p.m. – Clark County declares a State of Emergency, diverting resources from the rest of Nevada to the County.
Gov. Brian Sandoval’s spokeswoman Mari St. Martin says the governor also signed a public health disaster declaration Monday that temporarily allows doctors and nurses licensed from other U.S. states to practice in Nevada and help with the emergency response.
4:00 p.m. – In a press briefing, police update the number of dead to 59, and say another 527 were injured. Injuries included gunshot wounds, shrapnel and injuries from trying to escape.
4:50 p.m. – SWAT teams and police are congregated outside a Reno, Nev. home, which is registered to Paddock.
5:00 p.m. – Candlelight vigils are scheduled for the victims of the shooting.