Pullman police are investigating two incidents at the WSU Delta Upsilon fraternity house, both involving alcohol, and one involving an alleged rape. Police served a search warrant on the house Saturday.

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PULLMAN — An 18-year-old female Washington State University student has reported being given alcohol and raped at the Delta Upsilon fraternity, according to the Pullman Police Department.

Chief Gary Jenkins said police received a call Friday just before 6:30 p.m. The victim was treated at Pullman Regional Hospital.

The chief said the woman told investigators she was given alcohol at the fraternity house.

The next day, officers were called to the hospital and interviewed a 17-year-old girl who said she had been given alcohol at the Delta Upsilon fraternity house and had become ill, the chief said.

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Investigators served a search warrant at Delta Upsilon on Saturday afternoon. A possible suspect in the sexual assault was identified and interviewed but was not arrested pending more investigation, the news release said.

The Office of Student Conduct at WSU has been notified about the allegations, the chief said.