20 people have been feared trapped in a six-storey building that collapsed early on Thursday, following two days of torrential rain in India’s commercial hub.

Nine people had been confirmed dead, a municipal authority official said, while rescuers estimated more than 16 had been injured and taken to hospital.

“Rescue operations are already underway. We have sent 12 fire brigade vehicles to the spot. Ambulances are also ready to take the victims to the hospital,” a fire control room official said.

The collapse is the second in Mumbai in a little over a month. In July, 17 people were killed when a four-storey building crumbled after undergoing suspected unauthorised renovations.