in signed letter to Justice Department

One of former President Donald rump's attorneys signed a letter in June asserting that there were no more classified information stored at Trump's Mar-a-Lago residence,according to two sources familiar with the matter.

The letter signed by the attorney raises fresh questions about the number of people who may have legal exposure in the ongoing investigation into the handling of classified materials from the rump's time in the White House.

The probe reached dramatic heights earlier this week when the FBI executed a search warrant at Mar-a-Lago, with agents removing 11 sets of classified documents, some of which were marked as "top secret/SCI" -- one of the highest levels of classification.

That inventory list contradicts the attorney's letter. The removal of that classified information after the letter was sent could explain why prosecutors cited an obstruction law in their search warrant request. 

The sources did not identify when the letter was signed or by whom. It was part of an ongoing correspondence with the Department of Justice over the issue.