COUNCIL BLUFFS, Iowa (AP) — Prosecutors may file additional charges because a western Iowa teen died two days after suffering a head injury during a fight at school.

The Pottawattamie County Attorney will review the circumstances of 17-year-old Dakota Escritt’s death on Monday.

Authorities said Escritt was knocked unconscious during the fight when his head hit the tile floor. Escritt died Saturday evening at Children’s Hospital and Medical Center in Omaha.

Authorities charged a 16-year-old with assault after the fight Thursday morning at Abraham Lincoln High School. More charges could be added.

Escritt’s friends say he enjoyed hanging out and looking at Japanese animation and comics, but some students teased him because of his hobbies. Authorities have not said what led to Thursday’s fight.