Police say the 17-year-old girl became separated from her friends, was approached by a male she didn't know and was taken into a wooded area where she was sexually assaulted on Tuesday night.
When the teen arrived home from the party, she told her parents what happened and they took her to hospital and called police.
RCMP Cpl. Cheryl Bush said the event strongly resembled other recent sexual assault cases in Canada where witnesses have photographs or videos of the incident and then posted them online.
"If you have photos of this incident you are now being told that it was a criminal act so you now know what you do with those photos could have implications down the road," Bush told a news conference.
"We're really asking the young citizens of Kamloops who may have participated in this event to be responsible and do the right thing, talk to your peers, come forward to the police and let's not make this go any further than it already has."
Bush said what police really want to prevent is any of these inappropriate photos or videos, if they exist, from going viral on the Internet.
RCMP had deployed extra resources to conduct road blocks leading into the bush party and liquor and drugs were seized before the grads went into the event.
Bush said the community as a whole has an important role to play in helping police with the investigation and supporting the victim rather an victimizing her further. (The Canadian Press, CFJC, CHNL)
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