UP to 20 teenage girls from an exclusive Sydney Catholic school are under investigation for skinny dipping in a river during a Duke of Edinburgh camp.


Principal Janet Freeman said yesterday she would not confirm or deny any of the allegations levelled against the Year 9 students - who were on a trial hike for their Duke of Edinburgh's bronze award at the weekend.

But it is understood that on top of the late night dip in the Colo River, a number of girls are alleged to have urinated and defecated in a cooking pot - used for preparing meals - as a practical joke.