WASHINGTON — A document released Friday said allegations that Lee Harvey Oswald was connected to the CIA were ‘‘totally unfounded.’’

A 1975 CIA memo said a thorough search of agency records was conducted to determine whether Oswald had been used by the agency or connected with in it in ‘‘any conceivable way.’’

The memo says the search came up with nothing. The memo also says there was also no indication that any other US agency used Oswald as a source or for recruitment.

The memo was among government files related to Kennedy’s assassination released Friday.

Many of the never-before-seen documents relate to Oswald’s trip to Mexico weeks before the assassination.

Associated Press