REPUBLIKA.CO.ID, KOLKATAS -- A flyover under construction in the bustling Indian city of Kolkata collapsed on to moving traffic below, killing at least 14 people with as many as 150 people feared trapped, police said.

Residents were using their bare hands to try to rescue people pinned under a 100-metre (110-yard) length of metal and

cement that snapped off at one end and came crashing down in a teeming commercial district near Girish Park.

"Monumental tragedy. Rescue ops on. Many feared dead," Derek O'Brien, spokesman for the left-wing party that governs the

state of West Bengal of which Kolkata is the capital, said in a tweet.

Chief Minister Mamata Banerjee, seeking re-election in a regional poll next month, rushed to the scene to survey the

damage. She faces tough questions over who was responsible.

A newspaper reported last November that Banerjee wanted the project - already years late - to be completed by February.

Project engineers expressed concerns over whether this would be possible, The Telegraph said at the time.

Television footage from the scene showed a bloody hand reaching out from under what appeared to be a girder. People

were trying to hand bottles of water to survivors pinned underneath.

"The concrete had been laid last night at this part of the bridge," resident Ramesh Kejriwal told Reuters. "I am lucky as I

was planning to go downstairs to have juice. When I was thinking about it, I saw that the bridge had collapsed."

A senior police officer on the scene said that 15 critically injured people had been rescued.

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