A woman has been arrested over the fatal shooting of Sydney 15-year-old Brayden Dillon after her car was allegedly used as the getaway vehicle.
The 30-year-old woman was arrested outside Blacktown Police Station on Wednesday afternoon.
She is expected to be charged with murder.
Police will allege she owned the white Mazda 3 that was used as the getaway car in the murder of Brayden on Good Friday.
It comes after 26-year-old Conrad Craig was charged on Monday night with shooting the teen dead as he slept in bed at his Glenfield home.
Mr Craig is accused of bursting through the front door of Brayden's home, threatening his mother with a pistol before shooting the teen in the head in his bed at close range.
On Monday morning, police released images of the suspected getaway car spotted driving in and out of the Glenfield around the time Brayden was killed.
Information that flowed on from that public appeal forced police to bang down the door of where Mr Craig was staying in Seven Hills.
An anonymous tip-off to Crime Stoppers pointed police to an underground car park in Jamisontown on Tuesday afternoon where officers found the white Mazda 3.
Twenty-four-hours later they found the owner when the 30-year-old woman walked into Blacktown Police Station.
The main theory homicide detectives are investigating is whether Brayden was killed in retribution to his older brother Joshua Dillon's role in a fatal brawl in Panania in 2016.
Dillon, Brayden's brother, and two friends were involved in a clash with another group in the street in June last year.
That confrontation ended in the stabbing of 18-year-old TAFE student Adam Abu-Mahmoud.
Craig was refused bail on Tuesday and his case was adjourned to August.
The story, Woman arrested over alleged shooting murder of Glenfield teen Brayden Dillon, first appeared on the Sydney Morning Herald.