Street battles broke out when a team of surveyors entered the Shahi Jama Masjid in Sambhal on orders from a local court, after a petition from a Hindu priest claiming it was built on the site of a Hindu temple.
Protesters on Sunday hurled rocks at police, who fired tear gas canisters to clear the crowd.
Hindu nationalist activists were emboldened earlier this year when Prime Minister Narendra Modi inaugurated a grand new Hindu temple in the northern city of Ayodhya, built on grounds once home to the centuries-old Babri mosque.
That mosque was torn down in 1992 in a campaign spearheaded by members of Modi’s party, sparking sectarian riots that killed 2,000 people nationwide, most of them Muslims.
Some Hindu campaigners see an ideological patron in Modi.
