Former U.S. Attorney General Alberto Gonzales said Thursday that former President Donald Trump and his allies could be prosecuted for a number of crimes over the Jan. 6, 2021, attack on the Capitol, including seditious conspiracy and obstruction of Congress.

“He knew the crowd was dangerous. He encouraged the crowd to go to the Capitol. And he knew the crowd was armed. And he knew the purpose of what was going on in Congress, which is to certify the Electoral College count,” Gonzales told CNN’s Jake Tapper. “I think one might make the argument that there’s certainly the beginnings of a case for seditious conspiracy, obstruction of Congress.”

Gonzales, who served during George W. Bush’s administration, said current Attorney General Merrick Garland could consider prosecuting a number of crimes.

“So there are some things here that I think certainly Merrick Garland is going to look at in addition to witness tampering, that’s something that’s also a crime. So there’s there is a lot there, Jake,” he said.

Gonzales said it wasn’t yet clear how this case would play out in court, but that “I have to believe that folks in the Trump world are very concerned and very nervous right now.”

The House committee investigating the U.S. Capitol attack has presented damning evidence against the former president, including testimony on Tuesday from a top White House aide, Cassidy Hutchinson, who said that Trump and her former boss, then-White House chief of staff Mark Meadows, were aware that Jan. 6 could turn violent but pushed ahead anyway.

She said Trump knew on Jan.