The director of a South Jersey high school marching band pleaded guilty Tuesday to sexually assaulting a student.

Jason Koenig, 27, of Hammonton, had been charged with assaulting a 16-year-old female student late last year preceding a band trip to Baltimore. According to the Press of Atlantic City, Koenig admitted to digitally penetrating the girl on four or five occasions.

In pleading guilty, Koenig faces a five-year prison sentence and must register as a Megan's Law sex offender for life.

A 2006 graduate of the school, Koenig was also director of Hammonton High School's jazz and marching bands.

He resigned his position at the school  in April. After a weeklong investigation that ended on May 1, the Atlantic County Prosecutor's Office issued a warrant for Koenig's arrest on charges of official misconduct, sexual assault, criminal sexual contact, and endangering the welfare of a child. On May 5, he surrendered to law enforcement officials.