It happened near the Wellington Estates, authorities said.
Local residents reported seeing helicopters hovering over the area around 2:15 p.m. It was not immediately clear if the aircrafts were assisting with the search.
The suspect is a black man in jeans, possibly with a camouflage jacket. Anyone who spots him should call 911, police added.
Last month, the department credited a new fleet of drones for nabbing a shoplifting suspect, as reported by 6abc.
This is a developing story. Check back for more.
Click here to follow Daily Voice Conshohocken-Plymouth Meeting and receive free news updates.