Ryan Lucas

They'll be trying to trace his actions, his footsteps, so to speak, in the weeks, days, and, of course, hours leading up to what happened on Saturday night.

So far, officials say they believe Allen acted alone.

They don't see any sort of foreign involvement, foreign nexus here.

Now, Justice Department officials have said that Allen will face charges.

As of now, those will be the initial ones are expected to be assault on a federal officer with a dangerous weapon and using a firearm in a crime of violence.

They also expect to add more down the line.

Allen, as we said at the top, is expected to appear in federal court in D.C.

today.

So we may learn more then.

All right.

Allen has not been cooperating with investigators, but Blanche says authorities have been executing search warrants at locations associated with Allen.

They've done the same on his electronic devices.

And Blanche says based on preliminary information, investigators believe the suspect traveled by train from Los Angeles to Chicago.

And then from there on to Washington, D.C., he had a room at the Hilton Hotel where the correspondence dinner takes place.

He had two guns and knives on him when he tried to storm the ballroom.

Investigators will be trying to trace Allen's actions, his footsteps in the weeks, the days, the hours leading up to what happened on Saturday night.

Justice Department officials have said that Allen will face charges, assault on a federal officer with a dangerous weapon and using firearm.

and a crime of violence are the initial ones.

There will likely be more to come down the road.

Allen is expected to be in court here in D.C.