Waterloo Regional Police are on the lookout for a prowler in Waterloo.
Police received several calls about a person peering through bedrooms of a residence.
One of the reported incidents was in the Fir and Spruce Street area around 2:30 a.m.
Just before 1 a.m., police also received a report regarding similar behaviour.
The suspect is described as 5 '10", and was wearing all black clothing.
Anyone with information is asked to call police at 519-570-9777, or Crime Stoppers at 1-800-222-8477.
Residents are also being reminded to lock all windows and doors, and notify police of any suspicious activity.