(CNN) -- An analysis of veins corroborates a confession by a senior al Qaeda leader that he personally beheaded Wall Street Journal reporter Daniel Pearl, according to a new report released Thursday.
Khalid Sheikh Mohammed is suspected of planning the September 11, 2001, terror attacks on the United States.
Mohammed has not denied his role in the killing of Pearl, who was abducted in January 2002.
A video of the journalist's slaying was distributed online nearly a month after he was abducted, but the face of the killer who slit his throat was not visible.
U.S. officials have not charged Mohammed in the 2002 death.
"I decapitated with my blessed right hand the head of the American Jew, Daniel Pearl, in the city of Karachi, Pakistan," Mohammed said, according to a Pentagon transcript released nearly four years ago. "For those who would like to confirm, there are pictures of me on the
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