Indian-Chinese troops clashed near LAC in Arunachal on December 9, suffered injuriesSources told news agency ANI that PLA troops contacted the LAC in Tawang Sector of Arunachal Pradesh, which was contested by Indian troops "in a firm and resolute manner".Indian and Chinese army troops clashed along the Line of Actual Control (LAC) in the Tawang Sector of Arunachal Pradesh on December 9.Sources told news agency ANI that PLA troops contacted the LAC in Tawang Sector of Arunachal Pradesh, which was contested by Indian troops "in a firm and resolute manner".Twenty Indian soldiers were killed, with China suffering an undisclosed number of casualties, and both sides ramped up their military presence, moving troops, weapons and supplies to the high-altitude desert region.India and China share an un-demarcated 3,800 km (2,360 mile) frontier, where their troops previously adhered to long-standing protocols to avoid the use of any firearms along the de facto border known as the Line of Actual Control (LAC)."