Waterloo Regional Police say its special victims unit is investigating an assault that occurred in Waterloo on Sunday night.
They say a woman was walking along a trail in woods near Benjamin and Burning Bush roads at around 8:20 p.m. when she was approached and assaulted by a man.
Police are describing the suspect as around five feet five to five feet eight inches tall with a slim build, black hair and a trimmed beard.
The man was dressed in a black hat, a purple shirt and denim shorts.
They are asking anyone with information to call 519-570-9777 extension 8354 or Crime Stoppers at 1-800-222-8477.