Motorists can expect long delays on the A43 near Towcester due to an overturned car transporter and leaking diesel.
An incident has taken place on the A43 north between the A5 in Towcester and M1 J15a Northampton.
One lane is closed due to an overturned car transporter and shed load along with a large amount of leaking diesel.
Northants police, Northants fiew and traffic officers are currently on the scene.
Delays are expected.
MKFM will update this article as more comes in.