Sussex residents today were urged to join the war on terror following the London bombings.

County police chiefs urged members of the public to act as the eyes and ears of the force and to report anything suspicious immediately.

The number of armed officers patrolling both at Gatwick Airport and at railways has increased to meet the threat and new stop and search powers have been adopted.

Now the force wants everyone in the county to help.

Chief Superintendent Jeremy Paine, head of operations, said: "We are appealing to the public to do their part to assist us by reporting suspicious behaviour.

"Additionally, we are urging people to be aware of the concern they can cause by leaving property unattended in public places. There is no specific threat to Sussex but the public should stay vigilant, stay safe and report any suspicions they may have."

Sussex Police have instigated prevention of terrorism powers under Section 44 of the Terrorism Act 2000.

They allow officers to stop and search people without specific grounds where a terrorist threat exists.

Assistant Chief Constable Geoff Williams said: "I am keen to ensure my officers have every tactic available to them in this fight against terrorism.

"We will be using these powers wisely and to increase community confidence that Sussex is taking some positive steps to combat the terrorist threat."

He urged anyone with concerns to contact Sussex Police on 999 for emergencies or for less urgent matters call 0845 6070 999.

Books of condolence for the London bombing victims will be opened today.

They will be available for signing at Brighton Town Hall and Hove Town Hall between 8.30am and 5pm weekdays for the next couple of weeks, or for as long as people wish to continue signing them.