A labourer was critically injured after he fell off an under-construction municipal water tank in Navi Mumbai, an official said on Tuesday, the PTI reported.

The 25-year-old labourer who was identified as Arshad Shaikh, hailing from Bihar, was working at the site in Vashi in Navi Mumbai when he fell off the structure from a height on Sunday morning, the official of the Navi Mumbai Municipal Corporation said, according to the PTI.