But what is the toxin and how dangerous is it? Read on to find out. Ricin is a toxic chemical poison which is feared to be 6,000 times more poisonous than cyanide. It can be found in the form of a ...

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The most famous case of ricin poisoning was in 1978 when dissident Bulgarian writer Georgi Markov was killed when an assassin in London jabbed him with an umbrella that injected a tiny ricin ...

Residents of the tower block are not at risk, police say German police are searching flats in a Cologne tower block where a Tunisian man is suspected of having kept highly toxic ricin. The 29-year ...

Earlier it had been reported that the substance in the letters had tested positive for the deadly poison ricin. Utah police have detained a man in connection to the case. Ricin is made from castor ...

Mail delivered to the Pentagon has tested positive for ricin, a potentially deadly poison, according to a report from CNN, which cited US defense officials. According to the report, the mail never ...