The Centre, in an affidavit filed in the Supreme Court, has said an active action plan and proposed short and medium-term plans are in place to curb the pollution crisis in Delhi-NCR, adding that closure notices have been issued for violation of the norms.

In an affidavit filed in the top court, the Centre said notices of site closure over industry emissions, diesel generator sets, construction or demolition emissions have been issued after inspection by the flying squads.

The flying squads, constituted by the Centre, conducted visits across the National Capital Region, the Centre told the Supreme Court.

The flying squads inspected 1,534 sites and a total of 228 sites were issued notices of closure by the Enforcement Task Force.

The Centre informed the court that maximum violations of norms were reported in the industrial sector, which is a major contributer to air pollution, particularly during the winter months.