Authorities believed the documents at Mar-a-Lago had national security implications, according to the source.
There was also suspicion, after months of discussion on the matter, that Trump representatives were not being completely truthful with investigators, the source said.
Before FBI agents arrived Monday at Trump’s private club and searched his residence, people around the former President had been under the impression that the probe into how he handled classified information had stalled, according to two sources familiar with the thinking.
For months, investigators had been looking into how Trump handled material taken with him when he left the White House after the National Archives referred the case to the Justice Department earlier this year. It remains unclear why those around the former President believed the investigation had stalled, but in June, his attorneys received a letter from investigators asking them to preserve the remaining documents in his possession “until further notice,” one source told CNN.
The concern arose after the former President had returned some 15 boxes of materials to the National Archives.
On Monday, federal agents removed boxes of material from the Palm Beach property.
The Secret Service had about an hour heads up before the FBI executed the warrant, a source familiar with the situation told CNN. The Secret Service validated the search warrant, met up with FBI agents as they arrived, and ensured they had uninhibited access, but the Secret Service agents themselves did not help in the search, the source said.
The senior-most Secret Service person at the property served as the point of contact.
Trump has denied all wrongdoing and claims the investigation is a politically motivated sham, intended to derail his potential bid to return to the White House.
“The Department of Justice has reached an intolerable state of weaponized politicization,” McCarthy said, warning Attorney General Merrick Garland to “preserve your documents and clear your calendar.”
House Republicans briefly discussed the FBI search during a conference call on Tuesday, multiple sources told CNN, and top Republicans made clear that they want to get answers and a full accounting from the Justice Department.
CNN’s Whitney Wild contributed to this report.
