SAGINAW TWP, MI -- A 71-year-old Catholic priest has been arrested on allegations of sexual assault and other crimes.

The priest was arrested at his condominium in Saginaw Township after police in Saginaw and Tittabawassee townships conducted a six-month investigation, according to the Tittabawassee Township Police Department.

A sexual assault complaint was filed in August 2017, and claimed the incident happened inside the priest's condo.

Five additional reports were filed with the Tittabawassee Township Police Department from November 2017 to Sunday, Feb. 25, and claim the priest engaged in gross indecency, sexual assault, furnished alcohol to minors and bought the drug ecstasy, police said.

The priest was under police surveillance from November 2017 until the time of his arrest and at no time were students or others at risk, the statement from Tittabawassee police said.

Police said the investigation is ongoing and once it is complete the findings will be turned over to the Saginaw County Prosecutor's Office.

The priest's name was not released by police.

MLive.com could not reach Catholic Dioceses of Saginaw for comment.