Acting on a tip-off, a team of STF officials arrested Ramesh Singh, Harish Chandra, Ruksana and Shahnaj Parveen from Srinagar area of Mahoba district, IG, law and Order, B P Singh said here.
The officials also recovered eight .32 bore pistols and 16 magazines from them, he said.
During interrogation, the accused revealed that the gang used to buy these fire arms from Bihar and used to sell it in the state at higher prices.