New Delhi, Sep 16 - With recent Chinese incursions creating anxiety in India, National Security Adviser M.K. Narayanan has convened a high-level meeting of top officials Thursday to formulate an appropriate response to what is widely seen as Beijing's hostile posturing.

The meeting, to be chaired by Narayanan, are likely to be attended by Cabinet Secretary K.M. Chandrasekhar, Defence Secretary Pradeep Kumar, Home Secretary G.K. Pillai and Foreign Secretary Nirupama Rao.

The chiefs of the three armed forces and the Intelligence Bureau are also expected to attend the meeting which will scrutinise the nature of Chinese incursions and its larger ramifications for bilateral relations.

The meeting comes after reports about a high-profile war game, involving 50,000 troops, launched by the Chinese army that is aimed at improving Beijing's ability to deploy troops in Tibet whenever reinforcements are required.

In response, the Indian Army has mobilised its troops to forwards posts in Jammu and Kashmir and along the northeastern border with China in an exercise named Operation Alert, a senior defence official said Wednesday.

Although the government has publicly tried to downplay the incursions as routine incidents that occur due to differences in perception about the Line of Actual Control (LAC), there are anxieties that repeated incursions are meant to signal Beijing's hardening of stand on the border issue.

It's a way to put India on the defensive in the boundary negotiations, said a reliable source, who did not wish to be named.