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List of incidents involving ricin

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionAug 21, 2026
Entity authorityQ6014665
Source-derived summary

This is a list of incidents involving the poison ricin. The incidents are predominantly attempts to use the poison for attacks, rather than accidents and non-criminal events.

1970s

September 1978, London, UK, assassination of Georgi Markov

On September 7, 1978, Bulgarian dissident Georgi Markov was jabbed in the leg in public on Waterloo Bridge, London by a man using a weapon built into an umbrella which fired a small pellet carrying ricin into Markov's leg. Markov died four days later.

1980s

August 1981, Vienna, Virginia, US, assassination attempt on Boris Korczak

On August 14, 1981, CIA agent Boris Korczak, who had infiltrated the KGB but had been exposed, was shot like Georgi Markov with some sort of weapon that fired a minuscule pellet containing a potentially lethal dose of ricin into his kidney while he was shopping at Giant Food Store in Vienna, Virginia. Korczak and the CIA are convinced that this assassination attempt was the work of the KGB, as he had penetrated it deeply and harmed it significantly. Korczak survived, which he attributes to being shot in the kidney, causing his body to expel the projectile as though it were a kidney stone before it could kill him.

1990s

December 1995, Onia, Arkansas, US

In April 1993, Thomas Lavy was caught while trying to smuggle 130 grams of ricin from Alaska into Canada. Lavy stated that he purchased the ricin to poison coyotes on his farm in Arkansas and keep them away from his chickens. Lavy was stopped at the Beaver Creek border crossing by Canadian custom agents who found, along with the 130 grams of ricin, $89,000, a knife, four guns, and 20,000 rounds of ammunition.

Editorial summary

This brief starts where responsible research should: with the source description of “List of incidents involving ricin” as wikimedia list article. Everything that follows is an evidence route, not borrowed authority.

Editorial reviewA practical starting point whose main value is the path it opens into stronger specialist and primary sources. The current lead gives the account dated anchors—1978, 1981, 1995, 1993—that can be checked directly. The selected authority fields contribute no independent date. The account is most persuasive where List, incidents and involving can be independently traced.
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Why this record matters

The subject matters to the general reference register because the source frames it as wikimedia list article. Its deeper value depends on whether names, dates, institutions and citations support that framing.

Evidence profile

Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Aug 21, 2026. The linked authority identifier is Q6014665. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1978, 1981, 1995 and 1993.

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The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

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Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

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Source & attribution

This entry incorporates text from List of incidents involving ricin” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.