M6 toll road closed by armed police Police surround a Megabus coach during an incident on the M6 toll motorway near Weeford, Staffordshire. Photograph: Iain Findlay/BPM Huge disruption has been created on the M6 toll road in the West Midlands after armed police stopped a coach, and closed the motorway in both directions. Tailbacks stretched along the M6, exacerbated by an accident on the same motorway near junction 13. The road was closed on Thursday morning in both directions between junctions 3 and 4 at Weeford Park Plaza, near Lichfield. West Midlands. Police said the coach was on the hard shoulder and had "stopped of its own accord." Sources from West Midlands police told the BBC that the incident was not linked to counter-terrorism raids in London, and police had not stopped the coach as part of a planned operation. It is believed that a passenger on the Megabus coach was seen pouring liquid into a box which created fumes, which resulted in police being alerted at around 8.20am. The police were not able to confirm the reports. The Highways Agency said traffic was stationary and the closure was likely to remain in place until early afternoon. The fire service, officers from West Midlands and Staffordshire police and ambulance crews went to the scene to help people off the coach. Passengers remained on the hard shoulder several hours after the alert. Staffordshire police said: "There is a police-led incident on the M6 Toll between T3 and T4, in both directions." She could not confirm whether the incident was terrorism related. A spokeswoman for Megabus, which is operated by Stagecoach, said: "We are assisting police with their inquiries into an allegation made against a passenger who was travelling on board one of our services." The coach was travelling from Preston to London.