The M5 East is currently closed eastbound in the Main Tunnel due to a police operation near the Marsh Highway offramp.
Eastbound traffic is being diverted via the M8.
Traffic already in the M5 East tunnel is diverting via the Princes Highway.
Motorists should consider using King Georges Road instead and follow the D5 diversion route.
Traffic is heavy, so motorists should also allow plenty of extra travel time.