NEW DELHI (AP) — Officials say a land dispute triggered a violent clash between two communities that left two people dead and a dozen injured in northern India.

Police fired rubber bullets to break up the groups, who were hurling bricks and beating each other with fists while also setting fire to shops Saturday in Saharanpur district of Uttar Pradesh state.

Press Trust of India quoted district commissioner Tanveer Zafar Ali as saying two people were killed, while a police officer was in serious condition after being wounded by a bullet.

Authorities imposed a night-time curfew and deployed more law enforcement officials to patrol Saharanpur, about 170 kilometers (105 miles) east of New Delhi. Police said the brawl began over a simmering land dispute, but did not immediately give further details.