NEW YORK – The self-described mastermind of the Sept. 11 attacks says a onetime Osama bin Laden spokesman who is on trial in New York had no role in planning military operations for al-Qaida.

Khalid Sheikh Mohammed said in a statement filed in Manhattan federal court late Sunday that Sulaiman Abu Ghaith served as an al-Qaida spokesman because he was “an eloquent, spellbinding speaker.”

But Abu Ghaith, Mohammed said, “was not a military man and had nothing to do with military operations.”

Abu Ghaith, a son-in-law of bin Laden, is charged with conspiring to kill Americans.

Prosecutors say Abu Ghaith was part of al-Qaida’s deadly plot in his role as spokesman in fiery videos and as a motivational speaker at the group’s training camps in Afghanistan.

Abu Ghaith’s lawyers have said the Kuwait-born imam made inflammatory remarks but didn’t conspire to carry out terrorism.

Defense lawyers are seeking to use testimony from Mohammed, who is in a detention facility in Guantanamo Bay, Cuba. They would need U.S. District Judge Lewis A. Kaplan’s approval to introduce the information.

The defense has suggested Mohammed could help rebut the government’s claim that Abu Ghaith must have known in advance of al-Qaida’s so-called shoe bomb airplane plots, including Richard Reid’s attempt to carry one out in December 2001.

The statement from Mohammed filed Sunday consisted of answers he gave to questions posed by Abu Ghaith’s lawyers.