Trump had promised to declassify the previously-classified documents during his 2024 campaign.

President Donald Trump on Thursday signed an executive order to declassify files on the assassinations of former President John F. Kennedy, his brother Robert F. Kennedy and civil rights icon Martin Luther King Jr.

Trump had promised to release the previously-classified documents during his 2024 campaign following decades of speculation and conspiracy theories about the killings.

“Everything will be revealed,” Trump told reporters as he signed the order in the Oval Office of the White House.

During his first administration, Trump had promised to release all the files related to John F. Kennedy, but an undisclosed amount of material remains under wraps more than six decades after Kennedy was killed Nov. 22, 1963, in Dallas, Texas. The primary suspect, Lee Harvey Oswald, was killed two days later by Jack Ruby.

After appeals from the CIA and FBI, Trump blocked the release of hundreds of records. Trump said at the time the potential harm to U.S. national security, law enforcement or foreign affairs is “of such gravity that it outweighs the public interest in immediate disclosure.”