President Trump on Monday condemned the mass shooting in Las Vegas.
"It was an act of pure evil," he said at the White House.
Trump said he would travel to Las Vegas Wednesday to meet with first responders and victims.
PICS ABOVE: Crime scene tape surrounds the Mandalay Hotel (background) after a gunman killed at least 50 people and wounded more than 200 others when he opened fire on a country music concert in Las Vegas, Nevada on October 2, 2017. Police said the gunman, a 64-year-old local resident named as Stephen Paddock, had been killed after a SWAT team responded to reports of multiple gunfire from the 32nd floor of the Mandalay Bay, a hotel-casino next to the concert venue.Mark Ralston/AFP/Getty Images
Crime scene tape surrounds the Mandalay Bay Resort and Casino on Monday, Oct. 2, 2017. On Sunday night, a gunman killed at least 50 people and wounded more than 400 others when he opened fire on a country music concert in Las Vegas, Nevada. Police said the gunman, a 64-year-old local resident named as Stephen Paddock, was killed after a SWAT team responded to reports of gunfire from the 32nd floor of the Mandalay Bay, a hotel-casino next to the concert venue.
The president thanked first responders and police for reacting so quickly, crediting them with saving many lives. He also sought to offer comfort to families of victims.
"We are here for you and we are praying for you," he said.
Trump said the FBI and Department of Homeland Security are working closely with local authorities to assist with the investigation and will provide updates.
The deadliest mass shooting in U.S. history sent Trump scrambling to respond. The White House added the remarks to his schedule Monday morning and scrapped a planned event on regulation.
The president was briefed earlier on the shooting at a country music festival, which left 50 dead and more than 400 injured late Sunday night.
Trump first responded on Twitter, offering his "warmest condolences and sympathies to the victims and families of the terrible Las Vegas shooting."
© AP Photo/Evan Vucci President Donald Trump makes a statement about the mass shooting in Las Vegas, Monday, Oct. 2, 2017 at the White House in Washington.
The alleged gunman, Stephen Paddock, opened fire from the 32nd floor of the Mandalay Bay Hotel and Casino, which is next to the concert site. The 64-year-old Paddock was found dead in a hotel room, police said.
Authorities have not yet announced a motive.