A woman spotted a man performing an indecent act in a pickup truck in Waterloo on Thursday night, according to Waterloo Regional Police.
They say the incident occurred near Bluevale Street North and Neilson Avenue at around 8:15 p.m.
Police say the man, who is described as being between 30 and 40 years of age, was inside a red or maroon pickup truck.
Police say anyone with information can call 519-570-9777 or Crime Stoppers at 1-800-222-8477.