PORT REPUBLIC, N.J. (CBS) – A South Jersey choir teacher is now behind bars after police say he sexually assaulted one of his students twice a week for the past three years.

The week-long investigation led to the arrest of Brian McSee, 53, of Port Republic, who police say was the victim’s seventh- and eighth-grade choir teacher at Port Republic Elementary School.

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Brian McSee

Credit: NJSP

Authorities say McSee had been sexually assaulting the male victim twice a week for the past three years.

On Dec. 13, police say he was arrested without incident.

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McSee was charged with aggravated sexual assault, official misconduct, criminal sexual contact and endangering the welfare of a child.

“Given the close proximity of the residences of the victim and the defendant and the fact that the defendant had entered the victim’s home uninvited on December 2, 2017, it is important to ensure the juvenile victim’s safety as well as the public and that the defendant be detained, pending further court proceedings,” said Chief Assistant Prosecutor John Flammer who represents the state in the matter.

He remains held at the Atlantic County Justice Facility.

Police say McSee also served as choir director at the victim’s parish, St. Paul’s United Methodist Church.

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If anyone has any information regarding inappropriate behavior or interactions with McSee, please contact the Tuckerton Station Detective Bureau at 609-296-5807. Tips can remain anonymous.