Investigations are continuing into what motivated a Sydney teenager to carry out a terror-related shooting that left one NSW police worker dead.
Curtis Cheng (58) was killed in Friday's attack, which police believe was politically motivated and linked to terrorism.
His grieving family, including wife Selina and children Zilvia and Alpha, said they were heartbroken by the loss of the loving, generous and gentle father who always put the family first.
"We are deeply saddened and heartbroken that he has been taken from us, but we are truly grateful for the fruitful and happy life he has shared with us," they said in a statement.
The perpetrator, who has been named as Farhad Jabar Khalil Mohammad, fired more shots before he was killed by special constables outside the police force's Parramatta headquarters.
Police have no information to tie the boy to a specific group.
The federal government, police and agencies are working with the Muslim community to combat extremism and prevent young people from being radicalised.
Foreign Affairs Minister Julie Bishop says families will be Australia's frontline of defence against radicalisation.
She has the backing of at least one prominent Muslim community leader - Jamal Rifi - who appealed to parents to reach out and seek help for at-risk children.
Dr Rifi says parents should seek help early and made a special appeal to Muslim fathers.
