ANN ARBOR, Mich. (AP) — After spending two nights in jail, fired Michigan football coach Sherrone Moore was expected to be arraigned Friday amid a police investigation of an alleged assault.

Moore, 39, was fired on Wednesday for what the school called an inappropriate relationship with a staff member. Hours later, he was in police custody.

Authorities have not released details on Moore’s arrest, only confirming that he has been held at the Washtenaw County Jail and remains under investigation.

According to a statement from Pittsfield Township police, officers were called to investigate an alleged assault and arrested an individual without naming anyone. The statement was made in response to media queries regarding Moore.

While Michigan has not disclosed specific details of the alleged relationship, they said their investigation found credible evidence against Moore, who is married and has three young daughters. Athletic director Warde Manuel described Moore's actions as a clear violation of university policy.

Moore, who signed a five-year contract worth $5.5 million last year, is not entitled to a buyout because he was terminated for cause.

Moore, previously the offensive coordinator, was promoted to head coach after guiding the Wolverines to a national championship. He succeeded Jim Harbaugh, who has returned to the NFL.

As Michigan prepares to face No. 14 Texas on Dec. 31 in the Citrus Bowl, Biff Poggi will act as interim coach. This situation may contribute to player transfers and donor hesitations regarding future NIL deals.