Pakistan will look into reports that its army, taking advantage of the truce with India, has constructed 41 concrete bunkers and bundhs measuring over 500 metres along the Line of Control.

"I will have to look into these Indian reports and to verify whether we are within our rights to construct these bunkers and bundhs," a local newspaper, The News, quoted defence spokesman Major General Shaukat Sultan as saying on Monday.

According to the Karachi Agreement of 1949, the two countries cannot construct anything 500 metres from the LoC or the working boundary, Sultan said. But both are free at the International Border, where all activity is carried out by paramilitary troops.

"Instead of accusing us, the question to ask them is why did they construct an illegal 700-km long fence at the LoC? Pakistan has never violated any agreement," he said.