How this mass murderer hopes to walk free
MASS murderer Julian Knight wants Australia's High Court to overturn a Victorian law that is keeping him locked up.
The Hoddle St killer was jailed for seven counts of murder and 46 counts of attempted murder in November 1988 - about 15 months after he opened fire on one of Melbourne's busiest thoroughfares.
The 48-year-old was eligible for parole two years ago.
Knight's lawyers will ask the court to overturn state legislation specifically aimed at keeping him behind bars until he is dead.
Stary Norton Halphen has lodged a "notice of a constitutional matter" with the High Court, News Corp reported on Tuesday.
They will argue the parliamentary "corrections amendment" to keep Knight in jail goes against Chapter III of the Commonwealth Constitution, which partially defines parliamentary power.