Traffic slow on M1 in Northamptonshire after crash involving two cars

Traffic is moving slowly on the M1 in Northamptonshire after an crash involving two cars.
Traffic queuing on the M1 northbound between junction 15a and 16 after an earlier lorry fire. ENGNNL00120120920184202Traffic queuing on the M1 northbound between junction 15a and 16 after an earlier lorry fire. ENGNNL00120120920184202
Traffic queuing on the M1 northbound between junction 15a and 16 after an earlier lorry fire. ENGNNL00120120920184202

Long queues have built up between junction 15a and junction 15 in the northbound direction after the crash earlier this afternoon.

All lanes of the motorway have now reopened but motorists are being warned to expect delays.