Michigan football coach Jim Harbaugh has been suspended by the Big Ten Conference for the remainder of the regular season amid an investigation into sign-stealing, the league office announced Friday.

Harbaugh will be allowed to coach the No. 3 Wolverines during the week in practice and participate in team meetings and game preparation, but cannot be on the sideline or even in the stadium on game day. Michigan plays at No. 9 Penn State on Saturday, then is at Maryland on Nov. 18 before finishing the regular season at home Nov. 25 vs. top-ranked Ohio State.

According to the Big Ten, Harbaugh is suspended because Michigan violated the conference’s sportsmanship policy. The Wolverines were found to have conducted “an impermissible, in-person scouting operation over multiple years, resulting in an unfair competitive advantage that compromised the integrity of competition.”

The suspension comes three weeks after news broke that Connor Stalions, a former Michigan football analyst who resigned under pressure last week, helped organize a complex multi-state operation to steal future Wolverines opponents’ on-field signals in a manner against NCAA rules, either attending games and recording them himself or arranging for representatives to do so. Harbaugh has denied knowledge of such actions by himself or anyone in his program.

It’s the second suspension this season for Harbaugh, who sat out Michigan’s first three games — non-conference wins over East Carolina, UNLV and Bowling Green — for unrelated NCAA violations. He returned in time for the Sept. 23 Big Ten opener vs. Rutgers, and has the Wolverines 9-0 overall and 6-0 in conference play headed into the game at Penn State.

Harbaugh reportedly traveled with the team to Penn State, boarding the team bus and later the team flight early Friday afternoon. It was not immediately clear if Michigan will appeal the penalty or who will coach the Wolverines during Saturday’s game against the Nittany Lions.