(ROUGH CUT ONLY - NO REPORTER NARRATION)br br Around 50 passengers were escorted from a bus near Birmingham on Thursday (July 5) when armed British police closed a major toll road.br br The M6 motorway was closed in both directions after claims were made against a passengers on board the London-bound coach.br br Staffordshire Police said there was an incident at Weeford, but gave no further details.br br It was believed a man on board the 'megabus' poured liquid into a smoking bag.br br Armed police were in position next to the single-decker coach on the south-bound carriageway, as passengers were led off the vehicle one by one.br br The incident was not believed to be connected to earlier arrests in London of six people as part of a scheduled counter-terrorism operation.