CHICAGO (AP) — Chicago authorities have charged an 18-year-old in the slaying of an 11-year-old girl who was struck in the head by a stray bullet while at a sleepover last week.

The Cook County State’s Attorney’s office says Tevin Lee was charged Thursday with murder, felony murder and aggravated discharge of a firearm. It was not immediately clear if he has an attorney. No listed phone number was available.

Shamiya Adams was making s’mores at a friend’s house in Chicago’s West Garfield Park neighborhood on July 18 when she was struck by a bullet. She died early the next morning.

Superintendent Garry McCarthy told reporters Thursday that the shooting likely stemmed from a fistfight between two teenagers who were affiliated with rival gangs.

Lee was due in bond court Thursday.