sentences:  However he was implicated in an assassination attempt on Chief Judge McGruder when one of his Mark IIA robots attempted to kill her and she had to be saved by Dredd while "en route" to Titan.Although Greel's alleged guilt was never proved, McGruder curtly demoted him to a junior position in Traffic Control, effectively finishing his political ambitions for ever.The Mechanismo programme was aborted, and Dredd was pardoned.