Eid was celebrated in Kashmir with all 10 districts under curfew.
Curfew was imposed in Jammu and Kashmir's Rajouri district on Wednesday after violent clashes took place in the area over beef-related rumours.
Police sources say the clashes started after a man was beaten up for slaughtering a camel as sacrifice for Eid.
As soon as the news spread, people from two communities clashed, in which several people were injured.
Though the administration imposed curfew and deployed a large number of security forces, clashes continue in several parts of the town. The police fired teargas shells to disperse stone pelting crowds.
A photo journalist covering the clashes was injured in stone pelting. A shop was set on fire by the mob.
"We will not spare anybody who is found spreading communal unrest," said a top police officer. "It (the meat) was not beef. Those involved in beating of a man for carrying camel meat will be booked under Public Safety Act," he added.
With instances of cow vigilantism being reported from various parts of the country, Prime Minister Narendra Modi has asked the states to crack down on what he called "fake cow protectors", saying often they were anti-social elements.