Police are warning drone operators to be aware of where they are flying following a near-miss with an aircraft in Gloucestershire.
The unlicensed drone was spotted in the Brockworth area at about 19:30 BST on Tuesday, Gloucestershire Police said.
It was about two miles (3.2km) south of Staverton Airport when an aircraft was flying at 2,400ft (731m).
The drone could have caused a serious collision, police said and anyone with information is asked to contact them.
It is illegal to fly a drone without permission from air traffic control and drones must not enter aerodrome traffic zones either.
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