New Delhi/IBNS, May 14 -- Union Home Minister Amit Shah lauded the killing of 31 Maoists at Karregutta Hill on the Chhattisgarh-Telangana border this week as a part of 'India's largest anti-Maoist operation', and called it a 'historic' achievement, media reports said.

According to reports, 450 IEDs and 40 weapons have been recovered in the operation.

In addition, four factories producing weapons, motors, and cutters were found.

Hailing the operation, Shah said, "The hill on which the red terror once reigned, today the tricolour is flying proudly. Kurraguttalu hill was the unified headquarters of big Naxal organisations like PLGA Battalion 1, DKSZC, TSC & CRC, where along with Naxal training, strategies and weapons were also developed."...