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How was Seneca connected to the Piso conspiracy against Nero?

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In 65 CE, the Roman philosopher Seneca was denounced by his enemies for allegedly participating in the Piso conspiracy, a plot intended to overthrow and murder the emperor Nero.12

While the conspiracy involved a diverse group of senators, knights, military officers, and philosophers, Seneca’s specific level of involvement remains a subject of historical debate. Following the denunciation, Nero ordered Seneca to commit suicide. Seneca was among 18 of the 41 identified participants who died as a result of the conspiracy, either by direct order or out of fear of the emperor's retribution.21