BEIJING (AFP, REUTERS) - An Indian drone has "invaded" China's airspace and crashed, Chinese state media said on Thursday (Dec 7), months after the neighbours ended one of their worst border standoffs in decades.

"The Indian move violated China's territorial sovereignty. We strongly express our dissatisfaction and opposition," Xinhua news agency cited the deputy director of the army's western theatre combat bureau, Zhang Shuili, as saying.

Deputy director Zhang did not give details about when or where the incident happened. It said only that the drone crashed in "recent days" and did not give a location.

Chinese border troops "took a professional and responsible attitude" and carried out identification verification of the device, deputy director Zhang added.

In August, the two nations pulled back their troops to resolve a tense deadlock over part of a Himalayan plateau claimed by both China and Bhutan, an ally of India.

India's army chief said in September that his country could not afford to be complacent and must be prepared for war.

India and China went to war in 1962 over the state of Arunachal Pradesh.