Australian man sentenced to 44 years in prison for role in Curtis Cheng murder

An Australian man has received a 44 year prison sentence for his role in the terrorist killing of a father of two.

Raban Alou procured the gun that was used to kill police accountant Curtis Cheng, but according to the judge he should be punished as though he'd pulled the trigger himself.

Alou gave a loaded .38 calibre pistol to 15-year-old Farhad Jabar for him kill Mr Cheng as he left work at the Parramatta Police Headquarters in October 2015.

Jabar shot Mr Cheng in the back of the head and was killed in an exchange of gunfire following.

During the sentencing NSW Supreme Court Justice Peter Johnson said the crime would not have been committed without Alou's help.

He was sentenced to 44 years in prison for the charge of aiding, abetting, counselling or procuring a terrorist act.

Alou remains unrepentant for the killing, giving a one finger Islamic State salute as he was led from the court and shouting "this is the beginning".

Justice Johnson said based on Alou's behaviour leaving the court his chances for rehabilitation in prison were "almost hopeless".

His sentence expires in 2059 and he will become eligible for parole after 33 years in 2048.

However he could remain in prison past 2059, Justice Johnson saying an application for a continuing detention order could be made.