A Kansas University fraternity is being investigated by its national chapter after an 18-year-old man was charged with raping a female student at the local chapter house.

In a statement from the Delta Chi International Fraternity, the organization said the KU chapter and its members are cooperating with the university and Lawrence Police in addition to participating in the internal investigation.

According to police, a female KU student was at the Delta Chi fraternity house, 1245 W. Campus Road, Saturday night when she fell asleep in one of its rooms. Authorities said she was then sexually assaulted by the suspect, who was an acquaintance. She returned to her residence hall room and called the police.

Prosecutors filed rape and aggravated sexual battery charges against the man on Monday. His bond was set at $35,000.

According to the statement, fraternity officials will conclude their investigation after criminal proceedings are complete.

The Journal-World generally does not name suspects in sex crimes unless there is a conviction.