M6 Toll motorway: Megabus coach sparks security alert
5 July 2012 Last updated at 13:55 BST
A passenger on a Megabus coach service has prompted a security alert on the M6 Toll motorway.
Armed police responded when the 0510 Megabus service from Preston to London stopped on the M6.
A police source told BBC Radio WM that a passenger was seen pouring a liquid into a box, which then started smoking.
The 48 passengers were led off the coach and forced to sit apart in a cordon on the opposite carriageway.
About four hours after armed officers arrived, police confirmed the scene as safe, and said no-one was being treated as suspicious.
Jeremy Cooke reports.