The incident took place at the Kadenar camp of ITBP's 45thbattalion in Narayanpur, located around 350 km from capital Raipur.
Speaking to ABP News Inspector General of Police (Bastar range) Sundarraj P said, the ITBP jawan who fired at his colleagues is also dead.
The jawan has been identified as Constable Musudul Rehman of 45 Battalion ITBP.
Those killed have been identified as:
01)Head Constable Mahendra Singh, Bilaspur, Himachal Pradesh
02)Head Constable Daljit Singh, Ludhiana, Punjab
03)Constable Surjit Sarkar, Burdwan, West Bengal
04) Constable Biswaroop Mahtoo,Purulia, West Bengal
05) Constable Bijeesh, Kozhikode, Kerala
Sundarraj said the jawan did not hold any kind of animosity towards his colleagues, or seemed under distress, adding "the incident is being investigated".
It is, however, not clear whether Rehman shot killed himself or died while being neutralized. Certain reports claim he shot himself dead after gunning down his colleagues.
Narayanpur Superintendent of Police Mohit Garg has rushed to the spot.