Among the dead were three women while one body was too mutilated to ascertain the gender. Sixteen of the 67 rescued battled for life in hospitals, a day after an under-construction flyover collapsed, crushing people and flattening vehicles in the congested Posta area.

Three of the deceased were 25 years old while six others were in their 30s. The ghastly tragedy left behind a trail of devastation and raised unanswered questions about a project that was on for seven years.

Asha Joshi, 65, was the oldest among the dead, the West Bengal government said.Relatives of Sabana Bano, who perished at the Medical College and Hospital, were inconsolable.

Three bodies were still to be identified. Going into the reasons for the flyover crash, a government statement said: "It is apprehended that one cantilever pier no 40 has shifted due to which two spans covering three piers were affected."

Meanwhile, the police filed murder charges against top officials of the joint venture company, Hyderabad-based IVRCL Infrastructure, which was executing the flyover project and detained at least 10 of its employees.

"The charges brought against the company include murder, attempt to murder and criminal conspiracy. So far 10 people, including RK Gopal Nanduri, regional business head, have been detained," Joint Commissioner of Police Debashish Boral said.

Three of them - senior assistant general manager M. Mallikarjun, structural manager Pradip Kumar and assistant manager (administration) D. Majumdar - were subsequently arrested.

A 23-member special investigation team (SIT) has been set up to probe the disaster. A police team reached the company headquarters in Hyderabad to question its officials.

The chief engineer and an executive engineer of the Kolkata Metropolitan Development Authority - the state government unit in charge of the JNNURM project - have been placed under suspension.

Many of the residents of the sardine-packed multi-storeyed houses and numerous commercial establishments lining KK Tagore Street - right under the flyover - were still in a state of shock.

The Bharatiya Janata Party sought a CBI probe, calling the incident an "act of fraud protected by the West Bengal government".

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