A former Red Arrows Hawk plane, part of aerobatic display team, has crashed at car and music festival, CarFest, in Cheshire.
The CarFest festival is an annual motoring and music event being held in Oulton Park, near Crewe.
The aircraft was said to have taken part in a manoeuvre with another plane before disappearing behind woodland.
Around 40,000 people are expected to attend the festival over the three days with 15,000 camping on site.
The aircraft was a single-occupancy plane and it is not yet known if anyone was injured in the crash, although early reports suggest that the pilot may have ejected.
Incoming Top Gear presenter Chris Evans, who was hosting the event this weekend confirmed the news on Twitter.
He tweeted: "I am very sad to announce there has been a serious air incident at CarFest North off site. The emergency services are in attendance."
Pictures emerging from the scene show thick black smoke coming from the site.
The festival will continue as normal according to the organisers.
The organisers of CarFest said in a statement: "There has been a serious air incident outside the site of CarFest North, Oulton Park, Cheshire during an air display at around 14:00 today.
"The emergency services are in attendance and the air accident services have been notified.
"The event is continuing and more information will be released when it becomes available. No further comment will be made at this time."