Surveillance footage of Trump boxes paved way for FBI’s Mar-a-Lago search

Prosecutors suspected Trump kept classified documents because only a small number were returned from many boxes

Federal prosecutors used surveillance footage to determine within weeks of collecting subpoenaed classified documents from Donald Trump last year that there might be more national security materials at Mar-a-Lago, according to newly unsealed descriptions in the FBI search warrant application.

Much of the justification for executing a search warrant on Trump's residence in Florida was detailed in the sprawling indictment charging him with retention of national defense information and obstruction of justice.