An Indian military aircraft with 13 people on board went missing Monday in the northeast of the country, the defence ministry said.
The Russian-built Antonov An-32 took off from Jorhat in Assam state at 12:25 pm (0655 GMT) headed for Mechuka in Arunachal Pradesh, bordering China.
"The aircraft last contacted ground agencies at 1300 hrs, thereafter there has been no contact," the defence ministry said in a statement.
"A total of eight crew and five passengers were onboard the aircraft," it said.
Spokesman Lieutenant-Colonel P. Khongsai said every effort was being made to locate the missing plane.
Crashes by India's sizeable fleet of ageing Russian military aircraft are relatively common.