Red Arrow jet has crashed near Bournemouth airport, according to defence sources, as the annual air festival is taking place.

A Twitter account for the Bournemouth Air Festival said: "We are aware of the situation with the Red Arrows - will update you accordingly."
Police have confirmed they are dealing with "an incident" in the area although would not immediately give any details.
The Ministry of Defence (MoD) also said it is investigating.
Andy Martin, from the Bournemouth Daily Echo said he was 500 yards from the accident scene, and the area where the plane reportedly crashed was "locked down" by emergency services.
Eyewitness Laura Goodwin said she could see a police helicopter and a coastguard helicopter in the air.
She had been watching the display, and said she saw the red arrows coming in.
"One went one way, one went the other and then did not come back up," she told Sky News.
"Within seconds you could tell something was not right as there were ambulances there."
The aerobatic team was officially formed in 1965 and has taken part in over 4,000 displays in 53 countries, according to the official website.
A timetable said they were due to be carrying out a display at 1pm before a flypast in Drimpton - a village in West Dorset.