An Army bomb squad has been scrambled and a motorway closed after police carried out a “tactical stop” on a driver.
Officers attempted to stop the driver on the coastbound M20 in Kent, near to junction 12.
The driver failed to stop and left the motorway before returning to the London-bound carriageway, forcing police to take action to halt the car.
A Kent Police spokesman said: “It was pursued to junction 9 where a police car made tactical contact with the vehicle, bringing it to a stop with no injuries reported.”
“The motorway has been closed to allow for the carriageway to be made safe for road users, who are advised to find alternative routes if possible.
“The British Army’s Explosive Ordnance Disposal team is also currently at the scene as a precautionary measure, following concerns about the security of the subject vehicle.”
A 27-year-old man from Wales was arrested on suspicion of dangerous driving and failing to stop for police.