India, June 24 -- A three-storey under-construction warehouse in the Taratala area of West Kolkata, West Bengal, collapsed on Wednesday afternoon, trapping several people beneath the rubble.

West Bengal Chief Minister Suvendu Adhikari, who visited the disaster site where rescue operations were underway, said that about 18 more people remained trapped under the rubble, where coordinated rescue efforts were being carried out by state and central agencies, including the army's eastern command.

The collapsed warehouse is a lease-hold property under the Syama Prasad Mookerjee Port in the city, an official said.

"So far, 21 people have been rescued; three of whom have perished. The others have been admitted to SSKM Hospital, where all effort...