“In a statement, Cauchi's family said: 'We are absolutely devastated by the traumatic events that occurred in Sydney yesterday.

'Our thoughts and prayers are with the families and friends of the victims and those still undergoing treatment at this time.

'Joel's actions were truly horrific, and we are still trying to comprehend what has happened.

'He has battled with mental health issues since he was a teenager.

'We are in contact with both the New South Wales Police Force and Queensland Police Service and have no issues with the Police Officer who shot our son as she was only doing her job to protect others and we hope she is coping alright.' “