Its last reported position was 60 km north-west of Tezpur,” said an officer.Though some reports held the Sukhoi could have gone down near the West Kameng district in Arunachal Pradesh, IAF officials said no trace of the missing fighter had been found in the densely-forested and mountainous terrain in the region. This story is from May 23, 2017

Sukhoi-30 MKI fighter aircraft

NEW DELHI: Yet another frontline Sukhoi-30MKI fighter jet is believed to have crashed after it went missing around 60 km north-west of the Tezpur airbase in Assam, towards the Line of Actual Control with China on Tuesday morning. The jet which was on a routine training mission lost radar and radio contact when it was near Doulasang area of Arunachal Pradesh.
An Indian Air Force Sukhoi Su-30 goes missing near the border with China and is presumed to have crashed along with its two pilots.