In March 2006 he was denied parole for the 13th time for the murder of Robert Kennedy
[DOC] [TLE] RFK Friend to Raise Doubts About Sirhan Guilt at Parole Hearing ... [PAR] Feb 9, 2016 ... Robert F. Kennedy and Paul Schrade with Dolores Huerta Photo ... parole date 
was rescinded and he has since been denied 13 times.