Drivers are being warned to avoid a major Northamptonshire route after an accident this morning.
The A5 is closed in both directions between the A45 High Street junction in Weedon Bec and the A43 junction in Towcester, because of a spillage of several hundred litres of diesel on the road.
A diversion is in operation, via the A45 to the M1 junction 16 Northampton, south to J15a, and the A43 to Towcester (and vice versa).
The spill covers around 200 yards of the road surface. Engineers are expected to have to resurface the road today - so the closure is expected to last much of the day.
Diversion routes would be via the A43 from Towcester, the M1 and then the A45 from junction 16 back to the A5 at Weedon.
Updates to follow.