ST. LOUIS - Behind closed doors, witnesses are now being interrogated in the attempt to remove St. Louis Sheriff Alfred Montgomery from office. 

FOX 2 recently obtained video of a June assault that’s being investigated by the feds.

The video allegedly shows a deputy who was working secondary security with other officers at SLU Hospital throwing a man who had been in a wheelchair out the door. 

“Thuggish to jump on a guy in a wheelchair,” retired judge David Mason said. 

He’s now the Sheriff’s Office lawyer. 

“We didn’t hire this guy,” he said. “And this problem is the first thing that came to our attention and we’re dealing with it.” 

The case is now being investigated by the feds—adding fuel to the controversy involving the St. Louis Sheriff’s Office. 

Missouri’s Attorney General’s Office is attempting to remove Sheriff Alfred Montgomery because of his own actions, with accusations ranging from misconduct to misuse of power.

The AG’s case is now behind closed doors this week—downtown inside the old post office—the State of Missouri building on Olive Street.

An AG Office representative told FOX 2 the depositions are not open to the public.

FOX 2 asked the sheriff’s lawyer, retired judge Mason, when he arrived, “Should we be allowed inside?”

Mason answered, “I have no problem with it. It’s the public’s business.”

Sheriff’s employee Ron Jones was going in for his deposition when FOX 2 was there.

“I don’t see any secret about it,” Mason said.

Another on the list to be questioned is jail administrator Tammy Ross, regarding her detainment by the Sheriff’s Office for denying them access to a rape victim.  

“I think definitely since the Sheriff’s Office has been charged with all these ridiculous allegations of misconduct and given the way the press has gone, I think it wouldn’t hurt at all for the press to see everything and see what’s going on,” Mason said.   

Depositions continue all through the week, with several more on Thursday and Friday.