CONCORD (KRON) — A 15-year-old Concord boy accused of sexual assault was released from juvenile hall Thursday night with no charges, according to the Contra Costa County district attorney’s office.

The De La Salle High School student was arrested Tuesday on the accusation of sexually assaulting a girl who goes to Carondelet High School. The alleged assault took place on the De La Salle campus after a football game on November 18, according to police. The girl told Carondelet principal Kevin Cushing about the attack on November 21, and Cushing immediately contacted Concord police, Cushing said in a statement.

“I am proud of the courage shown by this young woman in coming forward with this information. The Carondelet community will stand behind her.”

The boy is a football player at De La Salle, a nationally recognized powerhouse school. The all-boys Catholic school is right next to Carondelet, an all-girls Catholic school. The institutions do share some activities, and juniors and seniors can share classes as well.

Due to the fact that the boy is a minor, police are not releasing his name.

Although he was released from juvenile hall without being charged, the investigation is still on-going, said Deputy District Attorney Jean Skilling.

Anyone with information about the case is asked to call Concord police Detective Kyle Colvin at (925) 603-5856. Anonymous tips can be called in to (925) 603-5836.