Noida, Feb. 8 -- Metro Hospitals & Heart Institute, Noida, where a fire broke out on Thursday, was operating without the mandatory occupancy and fire safety certificate (OC), Noida authority and fire department officials have said. As per the urban town planning rules, operations in a building are not allowed without the building owner obtaining the OC. After a building is ready, the Noida authority conducts an inspection to check if the construction is done as per rules before issuing the certificate....