Police incident leads to lane closure on M1

Motorists are being warned of delays after a police incident on the M1.
Traffic on the M1 before junction 33.Traffic on the M1 before junction 33.
Traffic on the M1 before junction 33.

Highways England has tweeted that one lane is currently closed on the M1 northbound between junction 29A and junction 30.

Approach the area with care. Delays starting to build on the approach.