Updated: Tuesday, 05 Mar 2013, 4:31 PM EST
Published : Tuesday, 05 Mar 2013, 3:29 PM EST
NEW HAVEN, Conn. (AP) — A judge has tossed two claims in Kennedy cousin Michael Skakel's latest appeal of his 2002 murder conviction but allowed the bulk of the appeal to head to trial.
The 52-year-old nephew of Robert F. Kennedy's widow, Ethel Kennedy, is serving 20 years to life in prison for the fatal beating of Martha Moxley in Greenwich in 1975, when they were 15-year-old neighbors.
Skakel's lawyers claim his previous attorney did a poor job at trial.
Superior Court Judge Samuel Sferrazza ruled Skakel's attorneys did not have to bring up the claim related to trial attorney Michael Sherman in an earlier appeal, as prosecutors argued. But he ruled claims related to prosecutors' closing arguments and the case's transfer from juvenile court could not be argued again because they were previously rejected.