Police shut a major bridge and tunnel across the River Thames
near London after arresting a man acting "unusually" and
finding a suspicious item.
Kent Police said they had been called to the Dartford
Crossing, which carries traffic on the M25 London orbital
motorway to the east of the British capital, after reports a
pedestrian was behaving strangely.
"The male has been arrested. Officers have located a
suspicious item and have closed the crossing whilst enquiries
continue," police said in a statement.
The tunnel and bridge, which carry traffic in opposite
directions, were closed at the height of rush hour when
thousands of vehicles would be using the motorway, and police
said the routes might be closed for some time.
Television pictures showed huge tailbacks of traffic forming
as police directed motorists away from the scene.