A driver has been arrested after motorists on the M1 reported seeing a man driving a van "naked and erratically".
Hertfordshire Police said they were called by concerned motorists who reported seeing a man driving a white Ford Transit panel van on the southbound carriageway .
Officers from the roads policing unit attempted to stop the driver but it is alleged he did not pull over. The van was pursued with the help of a police helicopter.
The pursuit ended on the North Orbital Road (A414) near the London Colney roundabout where it connects with London Road, St Albans.
The incident happened yesterday afternoon at around 3.30pm.
A 21-year-old man from Sutton-in-Ashfield, Nottinghamshire, was arrested on suspicion of driving a motor vehicle without its owner's consent, dangerous driving and failing to stop for police.
He has been released on police bail until Thursday March 20.