Suicide bombers

Suicide bombers may use a lorry, plane or other kind of vehicle as a bomb, so as to precisely time the explosion or get as close to their chosen target as possible, or may conceal explosives on their persons. Both types of attack are likely to be perpetrated without warning. The most likely targets are symbolic locations, key installations, VIPs or mass-casualty 'soft' targets.

When considering protective measures against suicide bombers, think in terms of:

• denying access to anyone who has not been thoroughly searched. Ensure that no one visits your protected area without being sure of his or her identity or without proper authority. Seek further advice through your local police force's Counter Terrorism Security Adviser
• establishing your search area at a distance from the protected site and setting up regular patrols. Brief staff to look out for anyone behaving suspiciously as many bomb attacks are preceded by reconnaissance or trial runs. Ensure that such incidents are reported to the police
• effective CCTV systems can help prevent or even identify planning activity. Good quality images can provide crucial evidence in court.

There is no definitive physical profile for a suicide bomber, so remain vigilant and report anyone suspicious to the police.