Troops of China's People Liberation Army (PLA) crossed the Line of Actual Control (LAC) into India in the first week of October in the Arunachal Sector.
However, the Chinese soldiers returned after the Indian Army conveyed to them that they were on the Indian side of the LAC, sources told ANI.
The armies of the two Asian neighbours now resolve such matters as per a set protocol, sources added.
Last month, informed sources had revealed that the PLA transgressed the LAC at least thrice s in August in the Uttarakhand state. The troops, then, had crossed over as far as four kilometres into the Indian Territory in Barahoti village in the Chamoli district of the state.
Similar incidents occurred in July last year when Chinese troops ventured up to a kilometre into Indian Territory in Barahoti.
Speaking on transgressions along the LAC by the PLA, General Officer Commanding-in-Chief (GOC) Northern Command, Lt Gen Ranbir Singh earlier this year said, it "took place in areas where we have different perception of the Line of Actual Control," adding that India and China have well-established mechanisms, especially at the highest level, where special representatives from both the countries discuss issues related to the resolution of the boundary dispute.
LAC is a 4,057-km porous border between India and China and runs through glaciers, snow deserts, mountains and rivers.