A World War II bomb has been discovered during work to excavate a plane in a North Yorkshire field.
The 500lb explosive was found on farmland at Ebberston, off the A170, during the RAF-licensed project to excavate and restore a wartime plane.
An army bomb disposal unit attended and a 500m (1,640ft) cordon was set up.
The villages of Ebberston and Allerston will be evacuated while the bomb is detonated in a controlled explosion at 1500 BST on Tuesday.
The A170 and other roads in the area will be closed during the explosion.
North Yorkshire Police said the bomb posed no danger to residents "in its current state", but people were urged to stay away from the area during the explosion.
A spokesman said: "Members of the public are requested to comply with the safety cordons that will be placed around the affected area to protect life.
"Police are warning that anybody who fails to comply with the safety cordons or safety road closures, will be placing themselves in considerable danger."