India Air Force stepped up a major search operation for AN-32 plane that disappeared from radar on June 3 in the northeastern state of Arunachal Pradesh.

:: Indian authorities on Tuesday spotted the wreckage of a plane missing with 13 air force personnel aboard after days of searching a remote mountainous region close to China.

The Soviet-built AN-32 plane, carrying eight crew and five passengers, disappeared from radar on June 3 in the northeastern state of Arunachal Pradesh, prompting a frantic search by the Indian Air Force (IAF) and ground teams.

“The wreckage of the missing #An32 was spotted today… at an approximate elevation of 12,000 ft by the #IAF Mi-17 Helicopter undertaking search in the expanded search zone,” the IAF said on Twitter.

“Efforts are now continuing to establish the status of occupants & establish survivors.”

Desperate authorities last week announced a cash reward of 550,000 rupees ($8,000) for any information about the plane.

They also urged village chiefs to organize search parties to scour the Mechuka jungle in the mountainous region.

The twin-engine plane lost contact with ground control 35 minutes after taking off.

In 2016, another AN-32 – flying from Chennai to the Andaman and Nicobar Islands – went missing above the Bay of Bengal. It had 29 people aboard and was never found.