Updated

Eleven Rice University students at an on-campus "Night of Decadence" Halloween party have been treated for alcohol poisoning.

The school in Houston released a statement saying ambulances were called early Sunday to assist with transporting the students to a hospital. Officials say all 11 students were treated and released.

Organizers say more than 1,000 people attended Saturday night's party where alcohol was available for students of legal drinking age. The event is hosted by the Wiess College dormitory.

Rice's dean of undergraduates, John Hutchinson, says school officials will meet with the 11 students to determine if they need alcohol abuse treatment.

Hutchinson says students organize the party, which has been an annual event since the early 1970s. He says usually three or four students require medical attention.