Official conclusions say lone gunmen committed the assassinations of President John Kennedy, Sen. Robert Kennedy and the Rev. Martin Luther King Jr.

US President Donald Trump ordered the declassification Thursday of the last secret files on the assassination of president John F. Kennedy, a case that still fuels conspiracy theories more than 60 years after his death.

President Trump told security agencies to develop plans to make public all documents related to the assassinations of John F. Kennedy, Robert F. Kennedy and the Rev. Dr. Martin Luther King Jr.