The AN-32 plane had flown from Dibrugarh in Assam to Mechuka in Arunachal from where it took off again with the civilians for Jorhat at around 2 pm, after which the aircraft went missing, said IAF spokesman Wing Commander P Sahu.
The six civilians were being ferried as part of the IAF plane's regular sortie. An aerial search operation over the dense forests and mountains of Arunachal Pradesh bordering Bhutan was carried out but neither the wreckage nor bodies could be located, Sahu said.
source : rediff.com