The Doklam Plateau is claimed by both Beijing and Bhutan as their territory. India backs Bhutan's claim.

The 73-day stand-off between Indian and Chinese troops at Doklam in the Sikkim section was resolved on August 28.

Sources said China has been slowly increasing its troop level in the Doklam Plateau which could further escalate the current situation as India has reasons to be concerned over it.China has now shifted its unused road construction material North and East of the face-off site.

The Indian Express report, however, said that 1,000 Chinese troops are still present on the plateau.

An indication of tension between the two countries due to the presence of Chinese forces in the Chumbi Valley in the Doklam Plateau was also given by Chief of Air Staff Air Chief Marshal B S Dhanoa on Thursday.

"The two sides are not in a physical face-off as we speak. However, their forces in Chumbi Valley are still deployed and I expect them to withdraw as their exercise in the area gets over," Dhanoa told reporters.

Days after the face-off ended, Army Chief Bipin Rawat had said China has started "flexing its muscles" and warned that the situation in India's northern border could snowball into a larger conflict.

There are also reports that People's Liberation Army (PLA) has increased more troops on its forward post in Yatung.

Sources said though Chinese troops have been deployed in Doklam Plateau, the road construction workers brought into the area are accompanied by up to 500 soldiers.

India along the borders is keenly watching the developments said authorities.