Three construction workers died of possible asphyxiation while they were trying to remove wooden planks from newly-built concrete walls of a septic tank at Bhimpur in Nadia district on Tuesday afternoon.

The accident happened at the residence of Dipak Biswas in Natunpara.

Sources said one labourer had gone inside and soon passed out. Two others followed him. “They, too, met with the same fate,” said a resident.

The residents then called police and fire brigade. The septic tank was demolished with an excavator.

The three labourers were brought out and rushed to the Krishnaganj Block Hospital, where they were declared dead.

The victims have been identified as Shuvendu Dey, 28, Suman Biswas, 27, and Amrito Biswas, 32.

14 kids injured

Behrampore: Fourteen children of a school were injured, one of them critically, when the pool car they were travelling in collided with a truck on NH12, off Murshidabad’s Mankara village, on Tuesday. The driver of the car was injured, too. The children are aged between seven and 10.

The condition of Sayan Ghosh, a student of Class III, is critical.