Punishment for accomplices
5.  Where any arm is used by any person in committing or in attempting to commit any offence, each of his accomplices in respect of the last-mentioned offence present at the scene of the offence who may reasonably be presumed to have known that that person was carrying or had in his possession or under his control such arm, shall, unless he proves that he had taken all reasonable steps to prevent the use of such arm, be guilty of an offence and shall on conviction be punished with death.