The deceased has been identified as Sehdev, a resident of Baghpat district in Uttar Pradesh, while the injured were Amit from Naharpur in Delhi and Bittu, who hailed from Sahibabad.
The truck was on its way from Delhi to Uttarkashi. There were some devotees who were carrying food material for distribution, the driver suddenly lost control of the vehicle near Lawakhal and it plunged into a 100-metre deep gorge, Deputy District Officer, Brijesh Kumar Tiwari said.
Sehdev died on the way to the hospital while the other two were referred for Dehradun.