OMAHA, Neb. (AP) — A 16-year-old boy has been accused of killing a girl found in a northwest Omaha creek on May 15.

Omaha police say the boy was arrested Thursday and is being held in the Douglas County Youth Center. So far he faces adult charges of first-degree murder and use of a weapon to commit a felony.

The victim has been identified as 16-year-old Melanie Koontz, who’d been a student at Benson High School.

Police have not released a motive nor said how Koontz was killed.

The Associated Press generally doesn’t identify juveniles accused of a crime.