Police and Paramedics have been scrambled after a lorry has been involved in a collision with a motorbike in the right hand tunnel of the Dartford crossing.
A source has revealed that the rider alerted emergency services to the brake down and was hit by an HGV with the tunnel. Traffic that has been trapped for the past 30 minutes is slowly being released.
The condition of the rider is not known or injuries.
Kent Police have been approached for comment
More to follow