771 people were arrested in night-long operations, which went on till this morning for bursting prohibited sound crackers like chocolate bombs and other fire crackers which exceed the decibel limit fixed by the authorities, Kolkata Police said.
"We have arrested 400 persons for bursting prohibited sound crackers. 331 others were arrested for unruly conduct in inebriated state," said an officer of the Kolkata Police.
The sound limit was fixed keeping in mind the problem noisy crackers posed for the old, ailing and the children.
Besides opening special control rooms, both the state and city police also maintained a strict vigil to avert any untoward incident during the celebrations.