(1)Where a person kills another in the course or furtherance of some other offence, the killing shall not amount to murder unless done with the same malice aforethought (express or implied) as is required for a killing to amount to murder when not done in the course or furtherance of another offence.
(2)For the purposes of the foregoing subsection, a killing done in the course or for the purpose of. resisting an officer of justice, or of resisting or avoiding or preventing a lawful arrest, or of effecting or assisting an escape or rescue from legal custody, shall be treated as a killing in the course of furtherance of an offence.