At least 20 Indian military employees lost their lives during collision with Chinese troops in the western Himalayas where the countries share common border. BBC reported that, citing the Indian army officials.
Initially, the Indian side claimed three fatalities, adding that both parties took casualties. Later, the officials added that several more sodliers deceased.
This is the first border conflict between these countries in 45 years.
"India's external affairs ministry accused China of breaking an agreement struck the previous week to respect the Line of Actual Control (LAC) in the Galwan Valley", BBC wrote.
China did not confirm any casualties, but blamed India with crossing the border illegally.
"Chinese foreign ministry spokesman Zhao Lijian said India had crossed the border twice on Monday, "provoking and attacking Chinese personnel, resulting in serious physical confrontation between border forces on the two sides", the news agency reported, citing AFP.
The line of actual control in Galwan Valley is poorly marked; there are many rivers, lakes and a lot of snow cover in this area, which means the line could change.