The NCAA is investigating the Michigan football program for allegedly violating rules that prohibit teams from scouting, in person, future opponents, industry sources told Yahoo Sports.

The allegation pertains to NCAA Bylaw 11.6.1, which reads: “Off-campus, in-person scouting of future opponents (in the same season) is prohibited,” sources say.

The Big Ten Conference received notification from the NCAA that the organization is conducting an investigation into the Wolverines, a league spokesperson said. The spokesperson declined to confirm any more details.

“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 subsequent 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.

There will be no more comments from the Conference at this time.

Teams are normally provided extensive video footage to scout opponents. At issue, according to sources, is whether Michigan used unnamed individuals to attend games of both scheduled opponents and possible College Football Playoff opponents in an effort to gather information on the signs they use to call both offensive and defensive plays.

Sign stealing is not technically prohibited and has a long and colorful history as part of the game. Scouting opponents in person has been prohibited since 1994

It is unclear whether the NCAA thinks Michigan used employees or other people who might be devoted to the program.

So, too, is whether information was detailed via video or some other means or if head coach Jim Harbaugh is involved.

Michigan is 7-0 and ranked No. 2 in the country heading into a rivalry game Saturday at Michigan State. The Spartans staff was notified of the situation earlier this week.