New Delhi: As part of efforts to upgrade military capabilities in the north-east, the induction of an advanced variant of the 290-km range supersonic cruise missile in the army for mountain warfare has been approved by the government.

The approval by the Defence Acquisition Council (DAC) -- Ministry's apex decision making body-- will pave the way for induction of the fourth missile regiment in the army, Defence Ministry sources informed.

The sanction for inducting a regiment of the Block III steep-dive variant of the BrahMos, granted recently in a DAC meeting chaired by the Defence Minister, is expected to enhance the lethality of army's firepower in the north-east region.

The steep-dive attack cruise missile can hit enemy targets hidden in the shadows of mountains, they said.

The army has inducted a total of three regiments already including two of the Block II variant, which can precisely hit the intended enemy building or assets even in a cluster of buildings.

In the backdrop of massive military infrastructure buildup by China in its areas along the frontiers, India has taken several measures to improve its preparedness in the north-east.

These steps include deployment of two squadrons of the Su-30 MKI fighter jet aircraft in Tezpur and Chhabua in Assam and raising of two mountain divisions for deployment in Arunachal Pradesh and adjoining areas.

The government also revised its old military doctrine of not developing roads along the border and is working on developing over 70 strategic roads on the Sino-Indian border.

BrahMos is a stealth supersonic cruise missile that can be launched from submarines, ships, aircraft or land and has been inducted in all the three services.