India: CPCB addresses stark Delhi pollution data gap on Diwali night

India's main pollution monitor has issued a clarification on a wide air quality data gap between official and private reporting in New Delhi that saw the city choked amid Diwali fireworks. DW has the latest. An Air India flight was isolated at West Bengal's Kolkata airport on Wednesday afternoon shortly before its scheduled takeoff, following a hijack alert, Indian media reports said.

"The incident has occurred on Air India flight AI 772. For safety reasons, the aircraft has been moved to an isolation bay. Security personnel have rushed to the spot and surrounded the entire aircraft to begin a thorough search," The Indian Express cited an official as saying.

According to reports, the aircraft was preparing to take off from Netaji Subhas Chandra Bose International (NSCBI) Airport for Mumbai when cabin crew members noticed a hijack alert written on the mirror of one of the plane's lavatories. "Necessary checks are currently underway by the concerned agencies in accordance with established protocols," news agency ANI quoted a statement from the airport as saying.