PATNA, Nov. 17 -- The Munger police unearthed seven illegal mini gun factories and arrested four persons during a raid in Herudiyara area under Mufassil police station, police said on Saturday.

Acting on a tip-off, the police busted the illegal factories and claimed to have seized seven base machines, one pistol, two partially made pistols, two pieces of 7.65 mm cartridges, five semi-made magazines and various equipment to manufacture fire arms.

"We also have also seized unfinished material and the equipment used for making such weapons," said Munger SP Dr Gaurav Mangla.

Those arrested have been identified as Rakesh Kumar, Ramanand Mahto, Praveen Yadav and Mukesh Sahu, the SP said, adding that the first three are residents of Munger dist...