Waterloo Regional Police say they are investigating a sexual assault that occurred at a park in Waterloo early Monday morning.
Police say a woman was near the playground of Interlaken Park on Interlaken Drive in Waterloo just after midnight when a man came up from behind and assaulted her.
They say the woman did not know her attacker.
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Police did not provide any further details on the suspect.
They are asking anyone with information to call 519-570-9777 or Crime Stoppers at 1-800-222-8477.