The parents of a man who stabbed six people to death at a Sydney shopping centre on Saturday have apologised to his victims.Joel Cauchi was shot dead by a police officer during his attack at the Westfield Bondi Junction. His parents said Cauchi, who had schizophrenia, was "a very sick boy" who had "lost touch with reality".

The parents of a man who stabbed six people to death at a Sydney shopping centre on Saturday have apologised to his victims.Joel Cauchi was shot dead by a police officer during his attack at the Westfield Bondi Junction. His parents said Cauchi, who had schizophrenia, was "a very sick boy" who had "lost touch with reality".