New Delhi: At least four people were killed on January 12 when a member of the federal security force fired on his colleagues in Bihar, eastern India.

Two died on the spot and the other two died on the way to hospital, a police officer in Aurangabad district told reporters.

The incident occurred at 12:30 am at the Navinagar Power Generating Company premises in the district.

The attacker, identified only as Balveer, was reportedly upset over some leave issues.

He belonged to the Central Industrial Security Force (CISF), which was set up in 1983 as a federal armed police force. It works under the federal Home Ministry to provide security cover to industrial units and other establishments located all over the country.

The incident is seen as increasing fratricidal cases among security forces in India.

The attacker, a native of Aligarh in Uttar Pradesh, Bihar’s western neighbor, has been arrested.

The four victims have been identified as Bachcha Sharma, N Mishra, Arvind Kumar and G S Ram.

Balveer allegedly used his rifle to shoot his colleagues who had assembled to leave for the shift change and after the first hit, he was overpowered by others present. It is understood that Balveer had come back after a two-month yoga course and had some issues related to leave, they said.

The CISF has ordered a Court of Inquiry into the incident.

The under-construction thermal power project is a joint venture of the Bihar government and the National Thermal Power Corporation.