President Donald Trump has led a moment of silence on the South Lawn of the White House, facing the Washington Monument, to remember the victims of the mass shooting in Las Vegas, Nevada.
It was the worst mass shooting in recent U.S. history with at least 58 dead and 515 wounded.
Trump has ordered flags across the country to fly at half staff. He plans to go to Las Vegas Wednesday to meet with first responders and console the victims and their families. The president has called the shooting an “act of pure evil.”
Police and federal investigators still do not have a motive.
They say 64-year-old Stephen Paddock of Mesquite, Nevada opened fire on a crowd of more than 22,000 attending a country music show before killing himself. Paddock shot from a hotel room on the 32nd floor of the Mandalay Bay Resort and Casino, located across the street from the outdoor concert. Videos show concertgoers ducking for cover, screaming and running as the shots rang out.
“We don’t know what his belief system was at this time,” Las Vegas Metropolitan Police Sheriff Joseph Lombardo said. Lombardo said SWAT officers burst into Paddock’s hotel room and found him dead. Police also found at least 10 rifles in the room.
WATCH: Sheriff on finding shooter
Islamic State is claiming responsibility, saying the gunman was one of its “soldiers” and converted to Islam months ago. The FBI says there is no evidence Paddock was tied to any international terror group.
Paddock’s brother, Eric, is just as baffled as police by his motive. He said the family is “horrified and bewildered.”
He said his brother was a wealthy man with no known political or religious affiliations, no ties with white supremacists, and no history of mental illness.
“Where the hell did he get automatic weapons? He’s a guy who lived in a house in Mesquite and drove down and gambled in Las Vegas,” Eric Paddock said.
Eric Paddock also said their father was a bank robber who was at one time on the FBI’s 10 most wanted list, but that the brothers had no contact with their father.
WATCH: Trump on shooting
Addressing the nation, President Trump thanked Las Vegas police for their sacrifices and quick responses during the “terrible, terrible attack.”
“To the families of the victims we are praying for you and we are here for you and we ask God to help see you through this very dark period…in moments of tragedy and horror America comes together as one and it always has,” Trump said.
White House spokeswoman Sarah Huckabee Sanders was on the verge of tears as she described some of the heroism of those who sacrificed their lives to save others as the bullets rained down.
WATCH: Video footage from scene
One off-duty police officer was among those killed, and another two on duty officers were injured, Las Vegas police said in a statement.
As the situation at the Route 91 Harvest Festival concert unfolded, people sought safety in the many hotels that line the popular tourist district. The Las Vegas airport is also in the area, and flights there were temporarily halted.
The U.S. Department of Homeland Security has said that there is “no information to indicate a specific credible threat involving other public venues in the country,” but that additional security may be seen at events and public places.
Country star Jason Aldean was performing on stage at the time of the shooting. Hours later he described it as “horrific.”
“I still don’t know what to say but wanted to let everyone know that me and my crew are safe. My thoughts and prayers go out to everyone involved tonight. It hurts my heart that this would happen to anyone who was just coming out to enjoy what should have been a fun night,” he said on Instagram.
U.S. Senator Dean Heller, who represents Nevada, called the shooting a “senseless, horrifying act of violence,” while Nevada Governor Brian Sandoval described it as “tragic and heinous.”
British Prime Minister Theresa May also expressed support, saying Britain’s thoughts were with the victims and emergency personnel.
In Photos: Las Vegas Shooting
