UPDATE 11.45am: M1 has fully reopened northbound.
The M1 is closed northbound between J13 Dunleer North and J14 Ardee in Louth this morning as emergency services deal with a vehicle on fire.
Gardai are diverting traffic. Delays remain on approach in both directions. Traffic is heavy on approach northbound.
It is believed to be a lorry which is on fire.