LINCOLN, Neb. (AP) — Police are investigating after a female Lincoln Southeast High School student reported being grabbed, pulled into a boy’s restroom and thrown against a wall by a teenage boy.

The girl told authorities the attack happened Tuesday when she went to her locker during her lunch period.

The girl says she screamed when she grabbed while she was in the empty hallway, then pulled into the restroom and thrown to the ground. Her attacker then fled.

Police have labeled the incident an attempted sexual assault, and believe a student was the assailant. School officials, however, say there is no evidence of sexual contact.