DJI, the world's largest drone manufacturer that sells more than half of all U.S. commercial drones, asked a U.S. District Judge in Washington to order its removal from the Pentagon list designating it as a "Chinese military company," saying it "is neither owned nor controlled by the Chinese military."

The military and the Pentagon’s UFO investigating arm have tried to determine the source of the drones that flew over Langley Air Force Base.

Unidentified drones spotted flying over Langley Air Force Base in Virginia have baffled US military officials who are not sure whether it is the work of hostile powers or hobbyists.

DJI had unsuccessfully attempted to engage with the defence department for more than 16 months on the issue, a spokesperson for the world's largest maker of consumer drones said on Friday

Dozens of mysterious drones have attempted to spy on sensitive U.S. military bases, and there is little the Pentagon can do to stop them.

By David Shepardson WASHINGTON (Reuters) -China-based DJI sued the U.S. Defense Department on Friday for adding the drone maker to a list of companies allegedly working with Beijing's military, saying the designation is wrong and has caused the company significant financial harm.