Additional force was deployed in Baradari, Prem Nagar, Qila and Kotwali areas and there would be no relaxation in the curfew, which was clamped yesterday following clashes in Jagatpur and Kalibari areas, District Magistrate Abhishek Prakash said.
Directives have been issued to relax curfew only for special occasion, he said.
Over 200 persons were arrested yesterday in connection with the clashes, out of which 48 were booked for curfew violations, police said.
Trouble broke out in Baradari area on Saturday when two groups clashed after a Janmashtami procession deviated from its fixed route and was stopped by some persons in Jagatpur Panwaria locality.
This led to heavy brick batting between two groups and firing in which three persons, including a mother-son duo were injured. The irate mob also torched a vehicle.
In Kalibari area people went on rampage when route of Dadhikandho procession was changed and clashed with police, they said.
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Police resorted to lathicharge and fired tear gas shells, but the mob indulged in brick batting and firing in which around 15 people, including three policemen were injured.
In the wake of clash curfew was clamped in four areas of the city and all schools and colleges have been closed till further orders.
SSP Satyendraveer Singh has suspended two sub-inspectors.
This is the second time curfew has been clamped in the city. Earlier curfew was imposed on July 22 following clashes between two groups which claimed four lives and was lifted completely on August 7.