M1 closed near Watford due to police incident (Image: PA)
Drivers have been warned to avoid the M1 near Watford while it is closed both ways due to a police incident.
Hertfordshire Police shut the motorway between junctions eight and nine by Hemel Hempstead just before 3pm this afternoon (September 11).
Update: police have confirmed the road is now open again.
- Police confirm reason road closed for hour and a half
- Police confirm why helicopter spotted above town 'for ages'
A spokesperson for the force has now confirmed that the road has been closed as a result of a concern for welfare.
The incident is causing knock-on congestion as there is heavy traffic northbound past junction nine towards Luton and on the slip road joining the A5138.
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