Police fired guns to halt clashes Friday between Hindus and Muslims after an Islamic mourning ritual in the western Gujarat state, where more than 1,000 people were killed in sectarian violence last year.
It was not known immediately whether anyone was hurt.
The state's police control room said violence was reported in several parts of Vadodara, 100 kilometers (60 miles) south of Ahmabadad, the state's largest city. The tensions began after Muslims marched in the streets to mark the annual Muharram holiday.
Muharram commemorates the 7th century martyrdom of Imam Hussain, the grandson of Islam's prophet Muhammad, in a battle in the Iraqi town of Karbala. The 10-day holiday is marked by prayers, processions and plays recounting the battle.
Police said there was also tension in the Pirana neighborhood in Ahmadabad, where a religious shrine is claimed by both Hindus and Muslims.