Srigar, March 13: After a history of secretive incursions into Ladakh area, the Chinese People's Liberation Army (PLA) troops have been spotted along the Line of Control (LoC) on the Pakistani side of Kashmir. This has set off warning bells in India's most critical security grid. The army spotted presence of senior PLA officials at the forward posts opposite Nowgam sector in North Kashmir after which some intercepts of Pakistani army officers suggested that the Chinese troops have come to create some infrastructure along the LoC, sources said on Sunday. Though the army has officially maintained complete silence on the issue, they have been constantly updating various intelligence agencies about the presence of PLA troops along the Line of Control, sources said. The PLA troops were first spotted in the later part of 2015 and ever since their presence was witnessed opposite Tangdhar sector as well. In this area, Chinese government-owned Chi Gezhouba Group Company Limited has been building a Jhelum-Neelum 970 MW Hydel power project.