NORTHFIELD (AP) - Administrators at a private college in Minnesota say 13 students have been suspended over a hazing incident involving extreme drinking as part of an initiation into a secret social club.

The school says police are also investigating an alleged sexual assault that followed the hazing at Carleton College.

A letter from Carleton College President Steven Poskanzer to students, faculty and staff says the hazing April 28 was part of an initiation into a secret coed social club. The liberal arts college of about 2,000 students in Northfield, doesn't have fraternities
or sororities.

The school declined to talk about the assault allegation and how, or if, it was connected to hazing.