New Delhi, June 4 -- Investigators probing the Malviya Nagar hotel fire tragedy have found that the roof exit of the building was closed at the time of the blaze, potentially cutting off a crucial escape route for occupants, sources said.

As the investigation intensifies, Delhi Police has formed a total of 10 teams, including five dedicated to tracing and apprehending absconding hotel manager Jai Mishra, while the remaining teams are handling various aspects of the probe.

According to sources, ahead of hotel owner Lavkesh Sharma's arrest on Wednesday, the police had also initiated a Look Out Circular (LOC) against him and his wife as a precautionary measure to prevent them from leaving the country. Investigators believed Bajaj had the o...