"There is no conclusive proof of UFOs flying over the India-China border. China disputes the international boundary between India and China," Defence Minister A K Antony said in a written reply to Rajya Sabha.
He was asked whether Indian Army troops guarding the Indo-China border have reported sightings of UFOs in Jammu and Kashmir's Ladakh region.
On the disputes over international boundary between India and China, Antony said, "There is no commonly delineated 'Line of Actual Control' (LAC) between the two countries. Both sides patrol up to their respective perceptions of LAC. However, Chinese patrolling up to their perception of LAC are treated as transgressions."
Such transgressions are taken up with Chinese side through established mechanisms such as hot lines, flag meetings, border personnel meetings and the newly established Working Mechanism on Consultation and Coordination on India-China border affairs, he added.
The Minister also said effective border management is carried out through surveillance and regular patrolling along the border areas.
Replying to a separate query on state roads which were taken over by Border Roads Organisation for development, Antony said, "107 state roads and 11 National Highways with a total length of 6,255.31 kms are entrusted to BRO for construction, strengthening and widening in North Eastern states including Assam."