Committee for State Security State Security played an active part in the so-called "Revival Process" to Bulgarianize the Bulgarian Turks in the 1980s, as well as writer and dissident Georgi Markov's 1978 murder on Waterloo Bridge in London known for the "Bulgarian umbrella" that was used. An issue the international community often raises is State Security's alleged control of the weapons, drugs, alcohol, cigarettes, gold, silver, and antiques traffic through Bulgaria before 1989. It is popularly thought that organised crime in the country in the 1990s was set up by former State Security agents. The agency is often incriminated with the ill-famed murder of
Wood Green ricin plot incident; they all survived. All other suspects were either released without charge, acquitted, or had their trials abandoned. Physicians throughout the United Kingdom were warned to watch for signs that patients had been poisoned by ricin, and the public health director for London urged the public not to be alarmed following some media reports. Britain's largest circulation tabloid newspaper, "The Sun", reported the discovery of a "factory of death", and other newspapers warned on their front pages "250,000 of us could have died", "Poison gang on the loose" and "Killer with no antidote". The fact that no ricin had been