A US military jet has crashed into the North Sea off the coast of Yorkshire.
A major operation is underway after the F-15 fighter jet came down near Flamborough Head in East Yorkshire, south of Scarborough.
The pilot is yet to be found.
In a statement, the US Air Force confirmed the F-15C Eagle crashed at around 9.40am.
The aircraft was from the 48th Fighter Wing at RAF Lakenheath in Suffolk, it added.
“At the time of the accident, the aircraft was on a routine training mission with one pilot on board,” the US Air Force said.
“The cause of the crash as well as the status of the pilot are unknown at this time, and UK Search and Rescue have been called to support.
“As soon as additional details become available, they will be provided.”
The 48th Fighter Wing had posted a photo on Twitter earlier on Monday of three jets in the air.
Sky News’ defence and security correspondent Alistair Bunkall said the area where the plane came down is used by UK and US military jets for training missions.
He added that he understood there were four military jets in the air at the time of the incident.
The Coastguard said it was co-ordinating the response after receiving reports that a plane had gone down into the sea 74 nautical miles off Flamborough Head.
A helicopter has been sent to the scene along with Bridlington and Scarborough RNLI lifeboats.
The Coastguard said other vessels nearly are heading to the scene after it carried out a Mayday broadcast.