TOKYO, Japan (CNN) --Accused 9/11 mastermind Khalid Sheikh Mohammed "will be subject to the most exacting demands of justice," U.S. President Barack Obama said Friday.

He was responding to a question about media reports that Mohammed will be tried in a federal court in New York, instead of by a military commission.

Obama would not confirm those reports, saying U.S. Attorney General Eric Holder would be making an announcement in the coming hours.