Pepper, a New York lawyer with an international practice, previously tried to prove that James Earl Ray was not the assassin of Martin Luther King Jr.
The lawyer said he is convinced that Sirhan was a victim of a mind control project such as those used by the CIA in the 1960s. He is seeking an evidentiary hearing to exonerate Sirhan in Kennedy's killing.
Dusek said in an interview that Sirhan was hypnotized for perhaps 30 percent of the interviews, most of which had to be done through a glass partition with Brown talking to him on a phone.
Only when Sirhan was moved from the state prison at Corcoran to his current location at Pleasant Valley State Prison in Coalinga were they allowed face-to-face visits, she said, and a few of those were recorded.
Other portions of the motion allege suppression of ballistics evidence and the autopsy report, and claim ineffective assistance of counsel. It contends previous lawyers for Sirhan accepted from the start that he was the lone shooter, settled on a defense of diminished capacity and did not seek other avenues of defense.
During the trial, Sirhan tried to confess to killing Kennedy "with 20 years of malice aforethought," but the judge rejected the blurted statement.
A large portion of the new documents seek to prove the bullets that hit Kennedy came from a different direction than the spot where Sirhan was standing. The papers do not name any other possible shooter.
Sirhan was denied parole in March by a panel that said he had not shown sufficient remorse for the killing.
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