Focarelli has told police he won't help them find the killer.

DISCLAIMER:Text may be subject to copyright.This blog does not claim copyright to any such text. Copyright remains with the original copyright holder.The self-proclaimed leader of the Comanchero outlaw bikie gang in Adelaide is refusing to help authorities find his stepson's murderer as police call for tougher laws to break the gangland code of silence.

Vincenzo Focarelli suffered a number of gunshot wounds in the fourth attempt on his life, but his stepson Giovanni Focarelli, 22, died after both men were shot on Sunday in Adelaide.