Bijoy Reang escaped from his camp at Lalcherra with an AK-47 rifle and went to the house of his father-in-law Kutibasi Tripura and shot him dead at about 10 PM last night, IG (Police Control) Nepal Das said.
The jawan also shot dead his wife Fuli Tripura, mother-in-law, Bilati Tripura, brother in-law Nabajit and sister-in-law Chuarbati.
Das said the jawan had a soured relation with his wife as he illegally married another woman. His wife had lodged a complaint to the authority and a departmental inquiry was on against him.
Reang is absconding.