Suspected militants of the National Socialist Council of Nagaland-Isak-Muivah (NSCN-IM) on 20^th May 2019 ambushed a convoy where National People’s Party (NPP) candidate Tirong Aboh along with his supporters was travelling from Assam’s Dibrugarh to his constituency, Khonsa West in Arunachal Pradesh. Tirong Aboh was the sitting MLA from the Khonsa West Assembly seat and was seeking re-election in the ongoing state assembly polls in Arunachal Pradesh. Tirong Aboh had contested and won from Khonsa West in 2014 on a People’s Party of Arunachal (PPA) ticket but he and six other PPA legislators switched sides to the NPP on July 2018.