The arrested persons have been identified as three brothers and their mother.
It may be noted that a businessman, Rachitrananda Samantray, had sustained critical injuries after some bike-borne miscreants hurled crude bombs at him in the village. He was soon rushed to a hospital in a critical condition.
The businessman has been admitted to a hospital where his condition was stated to be serious.
The police started investigations after recovering three unexploded crude bombs.
Past enmity is believed to the reason behind the incident.
