Patna, July 31 (IANS): A joint team of Special Task Force (STF) from West Bengal and Bihar along with local police conducted a raid and busted a mini-gun factory in Rahimpur village in Bihar's Saran, officials said on Tuesday.

Superintendent of Police (SP), Saran, Kumar Aashish said that the team has arrested five individuals. Of them, four are natives of Bihar's Munger.

During the raid, authorities seized a substantial cache of partially built guns, barrels, and equipment used in the manufacture of country-made pistols and "kattas" (country-made firearms).

"We have confiscated 75 partially built firearms, 15 barrels, 36 partially built barrels, 6 cutters, 14 drill machines, 2 building machines, 1 generator, 1 mobile phone, 1 lathe machine, 1 milling machine, 10 tons of iron bars, and other equipment," the SP said.

The mini-gun factory was illegally operating in a house owned by one Akhilesh Singh. Police have arrested Singh and four others, identified as Mohammad Chand, Mohammad Parvez, Irfan, and Mohammad Parwala -- all four are natives of Munger and are believed to be workers at the factory.

The team also recovered a large amount of raw materials at the factory during the raid.