The controlled explosion took pace outside Workington Police station
Cumbria Police said Explosive Ordnance Disposal (EOD) officers will carry out a controlled explosion on the vehicle in Workington.
A force spokesman said there was no threat to the public.
Members of the public have been asked to avoid the area. Diversions have been put in place on the A596 Workington via the A597.
Police have not released any more information.
The A596 has now been reopened.
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