Rochester police are looking for the person who threw a brick through the window of an unmarked cop car.
The probation officers were sitting in the parked car outside of the Sunoco gas station on Portland Avenue at the time of the incident.
Police say the suspect threw a piece of brick, shattering the back window.
The officers ran after the suspect who escaped in the area of Clifford Avenue.
Other officers with K9 units assisted in the search, but could not find the suspect.
Neither of the officers was hurt.