National Highways said: “The M5 in Somerset is closed in both directions between J23 (Dunball) and J24 (Bridgwater) due to a Avon & Somerset Police incident.
“National Highways Traffic Officers are also on scene providing assistance with traffic management.
“All traffic caught up within the southbound closure has been released.
“Traffic caught up within the northbound closure is in the process of being turned around via the rear of the queue.”