TUMWATER, Wash. — Four teenage boys are suspected of sexually assaulting another teenage boy at a sleepover at a Tumwater home, according to new police reports obtained by KING 5.

These new documents reveal how many students were involved, where the incident is believed to have taken place and details about the alleged assault.

The Tumwater Police Department is investigating the alleged sex crimes, which involve students from Bellarmine Preparatory School in Tacoma. The incident occurred off campus and outside of school hours.

A report from the Tacoma Police Department, which initially handled the investigation, details information gathered at Mary Bridge Children's Hospital three weeks ago. Tacoma police were called to the hospital where the 16-year-old victim was being seen after h

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