Two country-made guns and other tools used for hunting were seized from them, the officials said.
With the latest arrest, eight people have so far been held in the district in the last one week for suspected poaching.
Bikash Nayak, Surya Narayan Sethi, Kalu Behera and Manu Behera were nabbed from Jaganath Prasad reserve forest area on Friday, after forest personnel heard gunshot sounds during patrolling in the jungle, said Assistant Conservator of Forests, Ghumusar North Division, Ramesh Pradhan.
Among the articles seized from the accused were a motorcycle, a flash light, an axe and a sword.
Two others were also arrested for allegedly killing an adult wild boar by electrocution at Balibagada village in Berhampur forest division on October 22, he added.