RAIPUR: A CRPF jawan, who was being treated for ‘mental instability’, shot dead a colleague, injured another and then turned the rifle on himself in a camp in Bastar on Friday. Police haven’t explained why Girish Kumar, 25, was retained in an insurgency-combat zone despite being under treatment for months. Bastar range IG P Sundarraj said the fragging took place around 8am in the camp of CRPF’s 241 Bastariya Battalion in Darbha. “Constable Kumar was undergoing treatment for mental illness in an isolation ward inside the camp. Everything seemed normal until he suddenly got up and snatched a rifle from a colleague. He shot him and another jawan standing a few metres away and then shot himself,” he said. “All this happened in less than two minutes.