Post Parcel and Letter Bombs (PPLBs)

The explosive devices, charges sent by post or by messenger services are a special group of the IEDs (Improvised Explosive Devices). The lecture will show a short impression of the history of the PPLBs. The PPLBs (Post Parcel and Letter Bombs) are mainly EBTs (Explosive Booby Traps). The addressee´s dynamic activity will cause the detonation of the hidden explosive mechanism. Sometimes the PPLBs are “general directed infernal machines”, the detonation occurs at the target institution, for example at a post office, a city-hall, at a railway station. The paper classifies several types of PPLBs. The defence possibilities are well known in the international antiterrorist practice, but sometimes “security-holes”, leakages cause dramatic situations. The author shows some examples of the occurred attempts by PPLBs