A woman has been charged with murder after being allegedly involved in the fatal assault of 28-year-old Ross Houllis in a Sydney car park earlier this month.

The 27-year-old Bankstown woman was arrested at home on Thursday morning.

Ross Houllis, 28, went to the car park of Wakeley Shopping Centre late on Friday, February 14, with the intention of meeting a potential buyer for items he had advertised on Facebook Marketplace. Credit:NSW Police Media

Mr Houllis had arranged to meet a potential buyer for items he had listed for sale on Facebook in the car park of Wakeley Shopping Centre about 9pm on February 14.

He was approached by two men there, who demanded cash before allegedly assaulting him and dragging him through the car park.