Minister of State for Home Kiren Rijiju said that under the so-called China-Pakistan boundary agreement of 1963, Pakistan illegally ceded 5,180 sq kms of Indian territory in Pakistan occupied Kashmir to China.
Rijiju said as regards the Indo-China border, there is no commonly delineated Line of Actual Control (LAC) in the border areas between India and China.
From time to time, on account of differences in the perception of the LAC, situations have arisen on the ground that could have been avoided had there been a common perception of the LAC, he said.
However, he said, in case of Indo-Bangladesh border, there have been pockets that have traditionally been under the possession of people of one country in the territory of another country and these are known as 'adverse possessions.
"Government remains continually vigilant and is firm in its resolve to take all necessary steps to effectively safeguard India's security and territorial integrity.
"As regards the Indo-China border, government regularly takes up any transgression along the LAC with the Chinese side through established mechanism including border personnel meetings, flag meetings, meetings of working mechanism for consultation and coordination on India-China border affairs and diplomatic channels," he said.