Terror warning to Tube users

Tube passengers are being warned to be 'extra vigilant' against terrorism over Christmas with police handing out advice leaflets at all London Underground stations.

The leaflets, issued by the Metropolitan Police, carry a chilling warning to anyone who sees an unattended bag: "Don't touch, warn others, move away, and call 999".

It adds: "If you suspect it, report it!".

The warning comes just days after Scotland Yard alerted Londoners to a possible pre-Christmas terror camapign in the West End with threats from dissident Irish terror groups as well as Osama bin Laden's al Qaeda network.

The leaflets ask any member of the public who has sold a car recently, or has rented out a property, to report any dealings with people they consider suspicious.

A Metropolitan police spokesman said: "This is part of an ongoing campaign to ask people to stay alert and keep their eyes and ears open for any possible terror threat.

"It is also a reminder to people to keep track of their own luggage so as not to cause any unnecessary security alerts'.

Earlier this week, the Government admitted that a terror group would break through Britain's defences "sooner or later", and that the transport network is the most obvious target.