Those injured in the clash included two cousins belonging to one community and another youth belonging to other community, they said, adding the injured have been hospitalised.
The mob allegedly damaged a jeep of Deputy Superintendent of Police Gurbaj Singh, a motorcycle and a bus, police said.
The jeep was parked near the City police station on Phagwara-Banga road when the mob smashed its window panes and windshield. No one was inside the vehicle at that time, police said.
The bus driver is said to have driven away the bus from the mob. It could not be confirmed if any passenger was hurt, they said.
Both sides blamed each other for the clash, police said.
Enraged members of one community staged a dharna outside the City police station, indulged in brick-bating and blocked PhagwaraBanga road with panicky shopkeepers in the vicinity downing their shutters.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)