Media playback is unsupported on your device

M25 traffic chaos after security alert closes Dartford Crossing

6 September 2013 Last updated at 22:26 BST

Drivers have been stuck in huge queues after the M25 Dartford Crossing between Kent and Essex was closed in both directions because of a security alert.

Police ordered the closure when a pedestrian was arrested after being spotted behaving unusually, at about 16:00 BST.

The Queen Elizabeth II Bridge was shut at 17:00 BST, with both tunnels shut 20 minutes later.

Kent Police said officers found a suspicious item, forcing the closures.

At about 23:00 BST police said they had begun the process of reopening Dartford Crossing and confirmed that the item found does not pose a threat.

Ben Geoghegan reports.

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.