Shane O’Sullivan, the producer of a recent documentary on the assassination, told CNN, “There hasn’t really been a serious re-investigation of the ballistics in this case since 1975. … There’s new audio evidence .. which suggests that 13 shots were fired, eight from the front … and five from the back.”

Civil rights leader Martin Luther King was assassinated in Memphis, Tennessee, 40 years ago on 4 April 1968.

A year later, James Earl Ray admitted to being the assassin. Because of that guilty plea there was no full trial. But Ray changed his story almost at once and until his death in 1998 insisted he did not murder Dr King. So was he the killer? And if so, did he work alone?

The almost fanatical zeal with which the FBI pursued King is disclosed in tens of thousands of FBI memos from the 1960s.

The FBI paper trail spells out in detail the government agency’s concerted efforts to derail King’s efforts on behalf of the civil rights movement.

The FBI’s interest in King intensified after the March on Washington in August 1963, when King delivered his “I have a dream speech,” which many historians consider the most important speech of the 20th century. After the speech, an FBI memo called King the “most dangerous and effective Negro leader in the country.”

Don’t forget this CNN story from 1999

Forty years after Democratic rising star Robert F. Kennedy was killed at a Los Angeles hotel during his presidential run, new evidence suggests the man serving a life sentence for his murder did not fire the shots that killed the charismatic senator.

Forensic scientists met at a conference in Connecticut this week to discuss their independent findings that cast serious doubt on the Kennedy assassination. Sirhan Sirhan is serving a life sentence in Kennedy’s death, but the conference presenters argue he could not have fired the fatal shot that killed Kennedy.

NBC Story

The official record states that senator Robert F Kennedy, like his brother before him, was killed by a crazed lone gunman. But the assassination of a man who seemed to embody so much hope for a bitterly divided country embroiled in an unpopular war still troubles this nation.

Little about the official explanation of the events at the Ambassador Hotel on June 5 1968 makes sense. Now a new forensic analysis of the only audio recording of the fatal shots has given new weight to a controversial theory that there were in fact two shooters, and that the man convicted of Kennedy’s killing — Sirhan Sirhan - did not fire the fatal shots.