Before escaping from prison in 1967, James Earl Ray talked repeatedly about getting a bounty from the Ku Klux Klan to assassinate the Rev. Martin Luther King Jr., FBI documents show.
Word of the White Knights of the Ku Klux Klan in Mississippi offering a $100,000 bounty made it into a Missouri prison where Ray was, according to FBI records.
A month after King's April 4, 1968, assassination, the FBI interviewed one of Ray's former cellmates, Raymond Louis Curtis, who told the agent Ray discussed a bounty from the Klan in the South to kill King.
Curtis said Ray told him that if he got out in time and King was still alive, he "would like to get the bounty on King."
King's friends are now asking the Justice Department to review his assassination after emerging evidence involving the Klan, and researchers want the department to make public all records from the investigation in hopes of answering remaining questions.
In 1968, Ray pleaded guilty to killing King and got life in prison. He recanted days later.
In the late 1970s, the House Select Committee on Assassinations concluded there was "a likelihood that James Earl Ray assassinated Dr. Martin Luther King Jr. as a result of a conspiracy." One area the committee explored was whether Ray thought he would be paid for killing King.
The committee examined a $50,000 bounty on King's head, supposedly put up by a St. Louis businessman.
But little attention was paid to the $100,000 bounty FBI documents say the Klan offered.
Curtis told the FBI the subject of killing King came up during a discussion of the 1963 assassination of President Kennedy.
Ray never mentioned whom he would contact to get this bounty but did say he would demand the bounty be placed in a foreign bank, according to Curtis. After assassinating King, Ray fled the U.S. but was captured in London before he could travel to Rhodesia, now Zimbabwe.
"Curtis was of the opinion that not over three people would have been involved in the actual assassination," a May 3, 1968, FBI report says. "It would have been well planned with diversionary measures, and in the opinion of Curtis a second individual, not Ray, would have driven the getaway car to Atlanta as a diversionary measure."
The inmate, however, told the FBI he would never testify, saying he feared for his life.
David Garrow, the Pulitzer-Prize winning author of Bearing the Cross: Martin Luther King Jr. and the Southern Christian Leadership Conference, said the belief Ray was motivated to shoot King to collect a bounty "can be credited above and beyond ... what Curtis remembers."
Gerald Posner has penned what is regarded as the most definitive book on the King assassination, Killing the Dream: James Earl Ray and the Assassination of Martin Luther King Jr., concluding Ray shot King but that there may have been a conspiracy.
"Racism makes it easier to take on a bounty like that," Posner said. "It's like a neo-Nazi businessman being paid to shoot a prominent Jewish businessman. Money is like a bonus."
Despite his work, he believes there is more to learn about the assassination. "I'm the eternal optimist when it comes to investigating," he said. "It can always be explored. It's not impossible."
He was confident enough to call his book on the Kennedy assassination Case Closed, he said, "but I didn't do that with the King assassination."
Klansman-turned-FBI-informant Delmar Dennis told The Clarion-Ledger before his death that the White Knights regarded itself as a national organization and King as the ultimate enemy.
In 1965, the White Knights learned King's route across a bridge in east Mississippi. They planned to plant dynamite and station snipers nearby. Dennis tipped off the FBI, and King traveled a different route.
In 1966, when King took part in the Meredith March through Mississippi, members of the White Knights killed a black man to lure King to the Natchez area. That plot failed.
Claims of the White Knights' involvement emerged in the wake of King's assassination. Three months later, Margot Capomacchia, the mother of Jackson schoolteacher Kathy Ainsworth, told an FBI informant her late daughter and others played a role.
She said her daughter and four men were involved in King's death and "used radio equipment ... in jamming police calls."
The FBI discounted her claim, saying she was "believed to be mentally disturbed."
Eight years later, a similar allegation surfaced in Miami Magazine, claiming members of the White Knights, including Ainsworth and Tommy Tarrants, were involved in jamming police radios that day.
The FBI blamed Tarrants for the bombings of synagogues, civil rights leaders' homes and other targets in Mississippi.
In 1968, he was sentenced to 30 years for attempted murder but was released eight years later after a Christian conversion. He since has denounced his racism and violent acts.
He has denied any role in the King assassination but said it's possible the White Knights were involved without his knowledge.
Stuart Wexler and Larry Hancock, authors of an upcoming book, Seeking Armageddon: The Effort to Kill Martin Luther King Jr., are exploring evidence related to the White Knights.
One area the authors are exploring is the identity of the man supposedly seen with Ray in Los Angeles in March 1968.
Ray supposedly received calls from New Orleans and Atlanta.
The manager of the hotel where Ray was staying told the FBI the caller had a light Southern accent and identified himself as John Hardin. The manager also told agents a man who later appeared at the hotel sounded the same as Hardin.
Wexler said Hardin appears to have been an alias.
FBI documents contain an artist's rendering of the white man, identified as between 35 and 45 years old, 5-foot-7 to 5-foot-8, weighing between 140 and 150 pounds, with dark hair and dark eyes.
Wexler said he can't determine from FBI documents whether agents ever identified this man.
But agents appear to have linked him to an unknown racial provocateur connected to the 1962 riot at the University of Mississippi and the 1967 bombing of Rabbi Perry Nussbaum's house, Wexler said.
The provocateur's name remains unknown because it's blacked out.
The only way to get the name revealed is to prove the blacked-out name belongs to someone who has since died, Wexler said. "How do you do that when you don't know what the name is?"
Up until March 1968 in Los Angeles, Ray appears to be wandering, getting his bartending license, dabbling in the pornography business and taking dance lessons, Wexler said. "It's only in mid-March that he starts going whole hog after King, stalking him. The question becomes, 'What triggered the change?' "
In the early 1990s, the Justice Department began making public all of the records surrounding President Kennedy's assassination, but the opposite is true of the records surrounding King's assassination, which remain largely redacted and, in some cases, sealed. (An estimated 600,000 pages studied by the House Committee on Assassinations remain secret.)
If the FBI would make all its files public, "it would make amends for the unseemly things that (longtime FBI Director) J. Edgar Hoover did to Dr. King," Wexler said. "This would give them an opportunity at redemption."