evidence: The border security situation in Chumar sector of the eastern Ladakh turned worse when Chinese PLA soldiers crossed the Line of Actual Control (LAC) and took away 150 metres of Optical Fibre Cable (OFC) linked to a surveillance camera and 300 metres of army’s telephone cable last Sunday. [...] Senior officials says that Chumar has been the focus of PLA aggression as Indian Army’s observation post 30R dominates the LAC and gives a vantage view of the Chinese activity deep across the border. [...] The whole purpose is to push the Indian Army out of the vantage point near the LAC. While incursions in Arunachal Pradesh and Barahoti could be due to difference in LAC perceptions but the Chumar incident is about securing tactical advantage for the PLA in case of worst case scenario," said a senior official.