President Donald Trump signaled that federal authorities are making progress on discovering the motives of the Las Vegas shooter, despite an unusual lack of detail in recent days.

“They’re learning a lot more,” Trump said. “And that’ll be announced at the appropriate time.”

The president made his comments as he was leaving the White House for a trip to Las Vegas to visit with the victims and first responders to the horrific country music festival shooting that killed 59 people and wounded hundreds.

“It’s a very sad thing. We’re going to pay our respects and to see the police who have done really a fantastic job in a very short time,” Trump said.

First Lady Melania Trump is also traveling with the president on the trip.

“It’s a very, very sad day for me, personally,” President Trump told reporters.

The president plans to meet with victims of the shooting and medical staff at a Las Vegas hospital later this afternoon as well as some of the law enforcement officials and first responders who responded to the shooting.