Cheng gun accused remains behind bars

The man accused of supplying the gun used to kill police accountant Curtis Cheng remains behind bars after he was labelled a threat to community safety.

Talal Alameddine, 22, was charged with a string of offences after he allegedly supplied a .38 Smith & Wesson revolver to Raban Alou on October 2.

It's alleged 15-year-old Farhad Jabar used that revolver to gun down NSW police accountant Mr Cheng outside the force's headquarters in Parramatta the same day.

Alameddine's lawyers applied for him to be released on bail but Magistrate Margaret McGlynn refused it on Friday, saying she believed he posed "a great threat to the safety of the community".

Alameddine's case returns to court on December 10.