In its search for classified documents at Mar-a-Lago, the FBI might have missed several rooms, including a closet and a hidden room in Donald Trump s residence.

Thats according to a new ABC News report that suggests more documents may still be at Trumps Florida estate, almost two years after federal officials recovered more than 300 files from Trumps possession, some of them highly sensitive.

One of the rooms, a closet, was locked on the day of the search. When FBI agents couldnt readily find the key, they opted not to break it open.

Sources told ABC they believe Trump had the lock changed while an attorney hed hired was occupied in another part of the property, looking for documents there. Prior to the search, Trumps lawyers testified that theyd turned over all of the sensitive documents in Trumps possession a claim that turned out to be false.

Trump also had a hidden room adjacent to his bedroom that went un-searched, sources told ABC. A small door leading to the room was reportedly concealed that day by a large dresser and a big TV.

A spokesperson for Trump didnt immediately respond to a request for comment from HuffPost.

If the report is true, securing another search warrant wouldnt be a simple affair. First the feds would have to show up-to-date evidence that the rooms they missed currently contain criminal evidence.

As MSNBC legal blogger Jordan Rubin explains , Going before a judge and saying we messed up a year and a half ago wouldnt cut it on its own.