The shooting occurred last night at the camp of 111 CRPF Battalion when a jawan Deep Kumar Tiwari opened fire on the jawans who were sleeping, Dantewada SP Narendra Khare told PTI.
While three jawans died on the spot, one died while being taken to hospital, Khare said, adding that the injured has been referred to a Jagdalpur hospital.
While the exact cause is being ascertained Khare said the accused was suffering from some "psychological problems".
