Military sources and the media reported on Monday that Indian and Chinese troops were beaten on the disputed Himalayan border, injuring both sides.
Last week’s incident occurred after a fierce battle six months ago that killed at least 20 Indian troops and an unknown number of Chinese troops.
The latest incident happened last week at Naku La in Sikkim state, military sources told AFP.
Media reports quoted Indian military officials as saying there were casualties on both sides.
Officials said a Chinese patrol attempted to cross Indian territory and was forced to return to India.
Naku La connects Sikkim to Tibet in China.
Hand-to-hand fighting on the Sikkim border in May last year set off the latest frontier tensions between the world’s two most-populous nations.
In June, troops from the two sides fought with fists and wooden clubs in the Galwan valley of Ladakh region.
China and India, who fought a border war in 1962, blamed each other for the dispute and each has poured tens of thousands of extra troops into border zones.
The latest de-escalation talks between military commanders were held Sunday.