A seven-storey building collapsed near Ecospace, Bellandur area of Bangalore today, killing one man and injuring several others. About 10 ambulances have been rushed to the spot. The injured have been shifted to the hospital. There were as many as six people trapped inside, a senior police officer said. Rescuers have been able to hear the sounds of at least two people inside, he added. Five people have been rescued from the debris said reports. Bellandur is a relatively new part of the city with many IT firms. According to eye-witnesses, theystarted hearing rumbling sounds at around 12.30 p.m. and then saw the building come tumbling down soon after. Parts of the building fell on the security shed of the adjacent apartment complex, killing Ashok Mahanta, the security guard. Parts of the building also fell on the road, where an empty car was parked, damaging it, while some others fell on a vacant plot next to it. Mayor G. Padmavati also said action will be initiated against BBMP officials. "It seems like local BBMP officials were hand in glove with the owner and they allowed an extra floor to be constructed. We will take action against the officials," she said.