From an AP story by Ralph D. Russo headlined “NCAA investigating allegations of sign-stealing by Michigan. Harbaugh denies knowledge,involvement”:

Michigan coach Jim Harbaugh denied any knowledge or involvement in plotting to steal opponents’ play-calling signals by sending representatives to their games and said he would fully cooperate with an NCAA investigation into the allegations against his program.

“I do not have any knowledge or information regarding the University of Michigan football program illegally stealing signals, nor have I directed any staff member or others to participate in an off-campus scouting assignment,” Harbaugh said. “I have no awareness of anyone on our staff having done that or having directed that action.”