The underground tunnel, which police said is more than 100 feet beneath the surface, is being constructed near Akole village as part of the Nira-Bhima river-linking project on the outskirts of Indapur town, 120 km from here.
Around 6.30 pm, eight labourers were coming out of the tunnel in a lift when its cables snapped mid-way. All of them were killed in the incident, said sub-inspector B N Pawar of the Bhigwan police station.
He said most of those killed were from outside Maharashtra, but they are yet to be identified. A police team was at the spot to ascertain their identity.
The project, which began in 2012, is designed to take water from water-rich rivers to scarcity-hit areas.
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