Locals claimed that the missing persons were workers of the factory.
Eight teams comprising personnel from various agencies have been formed to carry out search operation and for clearing the debris. An FIR will be registered by the fire department and the police will take stringent action to book the culprits if proper norms and guidelines are found to have been flouted, Mitra said.
A major fire that broke out at a plastic chair manufacturing unit at Ghola was brought under control after eight hours on Monday. Twenty-five fire tenders were pressed into service to douse the flames.
(With inputs from PTI)