Authorities in northern Illinois say five people are facing alcohol-related charges in connection with an underage drinking party that ended with the death of an Illinois Wesleyan student.

Ogle County Sheriff Michael Harn confirmed Tuesday that 18-year-old Brandon Landau of New York was part of the party in White Pines State Park on Sunday.

Ogle County deputies were called to the area, and investigators learned a fraternity party was taking place at the state park. Five 20-year-olds were charged with illegal consumption of alcohol by a minor.

Authorities say Landau later was found unresponsive with his lower body in a stream and his upper body on a log. The coroner says a preliminary autopsy failed to determine a cause of death.