The NCAA is investigating Michigan football for allegedly violating rules which prohibit teams from scouting future opponents in person, Yahoo Sports is reporting.

On Thursday, the Big Ten released a statement on the report.

“Late Wednesday afternoon, the Big Ten Conference and University of Michigan were notified by the NCAA that the NCAA was investigating allegations of sign stealing by the University of Michigan football program,” the Big Ten said in a statement released Thursday. “The Big Ten Conference has notified Michigan State University and future opponents. The Big Ten Conference considers the integrity of competition to be of utmost importance and will continue to monitor the investigation. The Conference will have no further comment at this time.”

Teams use video footage for scouting purposes, but, according to the report, the investigation centers on whether Michigan attended games of scheduled opponents and possible CFP opponents to steal offensive and defensive signals.

NCAA Bylaw 11.6.1 states, “Off-campus, in-person scouring of future opponents (in the same season) is prohibited,” according to the report.

No. 2 Michigan (6-0) plays at Michigan State on Saturday.

Yahoo reports two of Michigan’s opponents this season were aware that Michigan knew their play signs.