NEW DELHI: India's foreign ministry on Tuesday accused Chinese troops of taking "provocative actions" on the disputed Himalayan mountain border while commanders from both sides were holding talks on Monday to defuse tensions between the Asian giants.

"Due to timely defensive action, the Indian side was able to prevent these attempts from unilaterally altering the status quo," ministry spokesman Anurag Srivastava said in a statement.

Indian troops had deployed on four strategic hilltops after what New Delhi called an attempted Chinese incursion along a border in the western Himalayan region of Ladakh over the weekend, an Indian official said.

China denied that it started the latest flare-up, with an embassy spokeswoman in New Delhi accusing Indian troops of trespassing across the Line of Actual Control (LAC) - the de facto border - and conducting "flagrant provocations".

Indian and Chinese troops have been locked in a border confrontation for months in the high-altitude snow deserts of Ladakh, and have held talks to reduce friction. The two have disputed the course of the frontier for over half a century.

The Indian official, who was briefed on the latest incident, said the Indian troop move responded to an attempt by a large number of Chinese infantry to push through a key mountain pass late on Saturday.

"We mobilised and occupied the four heights," the official said, adding all four hilltops were on India's side of the LAC. The Indian official said the Chinese soldiers were backed up by military vehicles and drew close enough to engage Indian troops in verbal arguments, but there were no clashes.