A jogger was struck from behind and indecently assaulted in Hamilton on Monday night.
Police said the 26-year-old woman was jogging along Lake Domain Drive, between the hockey ground and yacht club, about 6.15pm when a man struck her from behind, causing her to lose her balance.
The man grabbed then grabbed and indecently assaulted her, but fled after she screamed.
Detective Sergeant Shelley Begbie said police were seeking an athletic, solidly built man about 1.7m tall with short, dark hair and wearing athletic shorts at the time.
Police are also calling for sightings of a red sedan which was seen in the area at the time.