"The Indian UAV intruded into China's airspace and crashed recently, and China's border troops have conducted identification and verification over the vehicle", Zhang Shuili, deputy head of the combat bureau of the Western Theater Command's joint staff department, told the official Xinhua news agency.
New Delhi and Beijing eventually agreed to pull back their troops towards the end of August ahead of Prime Minister Narendra Modi's visit to China for the G20 Summit.
The nuclear-armed Asian giants have tried to develop their ties in recent years but there is still deep distrust over their disputed border, which triggered war in 1962.
An Indian drone has "invaded China's airspace and crashed" on its territory, Chinese state media said.
On Thursday, Chinese defence ministry voiced strong dissatisfaction and opposition to the "intrusion by an unmanned aerial vehicle (UAV) belonging to New Delhi".
"India's move has infringed upon China's territorial sovereignty and we are strongly dissatisfied with and opposed to this", he said.
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The EU originally screened a total of 92 jurisdictions and once the list is compiled it is expected to be continuously updated. The EU said they face potential punitive measures related to "foreign policy, economic relations and development cooperation".
"Indian border security personnel immediately alerted Chinese counterparts to locate the UAV".
"We will earnestly fulfil our mission of duty and firmly defend the sovereignty and security of our country", he added.
China had provided the Indian army with details about where the drone came down and Indian authorities were investigating, Colonel Aman Anand said in a statement. "The matter is being dealt with in accordance with the established protocols through institutional mechanisms to deal with situations along the India- China border areas", the statement further read.
The foreign ministers of Russian Federation and China will visit India on December 11 for the much-delayed trilateral meeting, which is expected to review global and regional issues of mutual interest.
But the mountainous border remains sensitive for both sides.