A suspected blaze at the Dartford Crossing tunnel causes disruption on the M25, according to reports. The incident is reported to be noticed around 4pm, after which the tunnel is evacuated. Drivers approaching the crossing face long delays, with traffic queuing for about an hour and some motorists reportedly forced out of their cars during the evacuation. Fire and rescue services respond to the scene, with multiple fire engines attending; one report says five fire engines arrive. The closure of the tunnel leads to congestion on the motorway and delays for vehicles travelling through the crossing area. Authorities manage the incident while the tunnel remains out of service, and traffic is held as crews deal with the suspected fire. No additional details about injuries, the cause of the blaze, or the reopening time are provided in the available reports.