Lutz Riemann (acting here as First Police Lieutenant Zimmermann) was from 1966 onward employed as undercover informant of the East German Security Police (IM des Ministeriums für Staatssicherheit also known as 'MfS'), his operational cover name was 'Richard König'. He spied and covertly provided information on his peers and colleagues from 1966 until 1989. Confronted in 2013 with evidence from the Rosenholz files exposing his clearname and his enlistment to the MfS, Riemann stated that he had committed himself to this undercover work out of "ideological reasons" and that he "was a communist and always will be". Until his death he received a pension from the the same state he had sworn to fight against, a not uncommon fate of many former MfS undercover operatives at the time.
