NEW DELHI: Several residents were feared trapped after a single-storey house collapsed following an LPG cylinder blast in north Delhi’s Mukundpur area on Tuesday morning, a Delhi Fire Service official said.The incident occurred at Gali No. 1, Part-2, Ishu Vihar, near the cremation ground, the official said.A distress call reporting the blast was received at 9:37 am, with the caller informing authorities that several residents were feared trapped under the debris. “We got information that a blast took place and a building collapsed due to which some people are trapped. Rescue teams rushed to the spot and launched operations,” the officer said.Five rescue vehicles were immediately dispatched to the site, he added.