DGP S Nitithyanandam told PTI that the ground search operation had been launched in nearby areas to locate the three occupants.
The Dauphin VT PHK helicopter, piloted by captain M S Bra and captain Rajiv Hoskte, had taken off from Naharlagun helipad around 8.30 AM and landed at Khonsa en-route Mohanbari It took off at 10.15 AM with Tirap DC Dr Kamalesh Kumar Joshi for Londing, but had gone missing after a few minutes.
This is the fith major accident involving Pawan Hans chopper since 2010.
The chief minister has called a meeting with the CS, DGP and civil aviation secretary after the report of finding the wreckage was received.