Aviation minister Ram Mohan Naidu Kinjarapu has promised a thorough investigation into the roof collapse at Delhi Airport's T1 departure where at least 1 has been killed while 6 left injured. All departures from Terminal 1, which has only domestic flight operations, have been temporarily suspended, and check-in counters closed as a "safety measure", a Delhi airport spokesperson said. The spokesperson also said that all departing flights from T1 have been cancelled till 2 pm today. Meanwhile the flight operators are arranging transport for stranded passengers. Union Minister of Civil Aviation Ram Mohan Naidu Kinjarapu went to the airport and inspected terminal 1.