Siegfried Lorenz (born 26 November 1930) is a former senior party functionary of the ruling Socialist Unity Party of Germany (SED / Sozialistische Einheitspartei Deutschlands) in East Germany.
He was a member of the Politbüro of The Party's Central Committee in Berlin and First Secretary of the party's Karl-Marx-Stadt regional leadership team.
During his career held a number of positions with the country's FDJ (Free German Youth movement).
On 6 August 2004, fifteen years after the Wall came down, Lorenz, now aged 73, was one of two senior party officials found guilty by the Berlin regional court as accessories to murder.
The case involved Michael Bittner, Lutz Schmidt and Chris Gueffroy, three citizens of the former German Democratic Republic who had been shot dead while trying to escape to West Berlin.
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