The tests were conducted from the Proof and Experimental Establishment (PXE) at Chandipur firing range No 2, defence sources said.
Chandipur PXE director Appavu Raj told PTI, "A total six rounds, three yesterday and three today, of the Mark-2 version of Pinaka rockets with more than a 60 km range were successfully tested."
Defence sources said, "Pune-based Armament Research and Development Establishment of DRDO personnel with logistic support of PXE, conducted the tests."
The advanced version Mark-II rockets with a range of more than 60 km, capable of acting as a force-multiplier, was developed to supplement artillery guns, the sources said.
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The system's capability to incorporate several types of warheads made it deadly for the enemy as it could even destroy solid structures and bunkers.