M11 shuts in both directions after "police incident"
Essex police are currently at the scene of a collision on the northbound carriageway of the M11, between junctions 5 and 6.
A man has sustained serious injuries and is being treated by paramedics.
They expect the disruption to last for several hours.
The police have said "the road will remain closed in both directions" while they work with emergency services to make the road safe.
The police have asked drivers to check before they travel and plan accordingly.