According to police, the truck, Na 4 Kha 9764, was heading to Kathmandu from Biratnagar when it plunged into the river at Darechowk-2, Ghoptevir at around 2 pm this afternoon.
The injured are driver Sanu Bahadur Adhikari, 42, and co-driver Balram Kunwar, 18, of Pipal-8 of Nuwakot.
The duo is receiving treatment at Chitwan Medical College, police said.
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