Prosecutors on Monday tried to stop the self-described mastermind of the Sept. 11 attacks from providing testimony at the terrorism trial of Osama bin Laden's son-in-law, according to The New York Times.

The government submitted written arguments asking U.S. District Judge Lewis A. Kaplan to exclude the words of Khalid Sheik Mohammed from Sulaiman Abu Ghaith's trial, the Times reported.

Abu Ghaith is on trial on charges he conspired to kill Americans and aided al-Qaeda as the terror group's spokesman after Sept. 11, according to the Times. The 48-year-old onetime imam at a Kuwaiti mosque was brought to New York from Turkey last year.

Prosecutors said defense lawyers should be blocked from calling Mohammed as a witness through live, closed-circuit video from Guantanamo Bay, where he is imprisoned, the Times reported. The judge scheduled arguments on the issue for Tuesday morning.

The defense asked to use Mohammed as a witness after reviewing a 14-page statement Mohammed provided in response to 451 questions posed by Abu Ghaith's lawyers, according to the Times.

In it, Mohammed wrote that he wanted to help Abu Ghaith but was distrustful of the source of the questions posed to him, saying they reminded him of interrogations he underwent after his 2003 capture, the Times reported.

He said Abu Ghaith did not play any military role in al-Qaeda, a statement supporting defense arguments that he did not know about pending al-Qaeda attacks when he warned on a widely circulated video after Sept. 11, 2001, that "the storm of airplanes will not abate," according to the Times.

Mohammed also seemed to support the government's argument that Abu Ghaith played a key role in al-Qaeda, saying fighting one of the world's leading powers meant "we would have to resort to a long war of attrition to which the military and media alike contribute," the Times reported.

He said bin Laden put Abu Ghaith in charge for a time of al-Qaeda's media operations, where workers did not know about specific terrorist plots because even "those carrying out the operations are not privy to the specific plans until the goal or the time of the operation approaches for fear that the operation will be botched or miscarried," according to the Times.

Mohammed said those tasked to speak on videos would be chosen if they were an "eloquent, spellbinding speaker," the Times reported. Abu Ghaith is the highest-level al-Qaeda figure to be tried in the U.S. since the Sept. 11 attacks.