Uttar Pradesh's Muzaffarnagar district saw clashes between members of two communities which led to 30 persons being arrested for the violence.
According to UP Home Secretary Kamal Saxena, the death toll in the violence has reached 19.
The army on Sunday morning staged a flag march in riot-hit areas of Muzaffarnagar district.
Curfew remained in force in Civil Lines, Kotwali and Nai Mandi areas of the district with the Army carrying out a flag march in the troubled areas. Five companies of PAC and as many of the RAF and the police have also been deployed.
UP Chief Minister Akhilesh Yadav had on Saturday said that those behind the clashes will not be spared.
Amidst this opposition party BSP has demanded the CM's resignation as Congress leader Digvijay Singh also took to social media site Twitter to blame the ruling Samajwadi Party for the bloodbath in the region.
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Curfew has been imposed in the area to curb the violence.
Two persons arrested after clash in Agra. Police said that preventive measures have been put in place in other communally sensitive areas of the city, like Loha Mandi and Mantola, especially in view of tensions in Muzaffarnagar district.
Muslim clerics condemned the violence. They cautioned people against "political conspiracies" aimed at dividing them on religious lines and appealed for peace and harmony in Uttar Pradesh.
While RPN Singh appeals for peace, the Centre seeks a report. Though law and order is a state subject, we are constantly monitoring the situation in Muzzafarnagar, said MoS in Home Ministry RPN Singh. He has also appealed to people to maintain peace. Home Ministry officials, who were in regular touch with the Uttar Pradesh government, have not only asked for a report on the situation.
Bahujan Samaj Party, which is in the opposition in the state, demands dismissal of UP government. BSP leader Swami Prasad Maurya urged Governor Banwari Lal Joshi to recommend imposition of President's rule in the state.
Army troops moved in to Meerut and Shamli as a precautionary measure. On the Uttar Pradesh government's call for help, troops were moved into the violence area. An army official reportedly said eight columns of the army moved into Muzzaffarnagar on Saturday while eight army columns from Meerut reached on Sunday morning.
Samajwadi Party supremo Mulayam Singh Yadav expresses displeasure over spurt in violence. Mulayam Singh Yadav on Sunday held a meeting with Chief Minister Akhilesh Yadav, ministers and senior officials at his residence. "The incident is unfortunate. Our government is committed to strictly dealing with such incidents. Directives have been issued in this regard," UP minister Shahid Manzoor told reporters after the meeting.
Schools in neighbouring Meerut to remain shut on Monday. District officials on Sunday issued orders to this effect in view of the tension. According to District Magistrate Navdeep Rinwa, the orders for closure of the academic institutions were just a precautionary measure and the situation remains peaceful in Meerut. All state government employees have been advised to remain on duty and not take leave.
Rashtriya Lok Dal President Ajit Singh on Sunday demanded that the Centre immediately impose President’s rule in Uttar Pradesh due to the complete failure of the administration in maintaining law and order in the state and the inability to control the riots that have engulfed the region