Police said the pair - women aged 40 and 77 - were crossing Ferny Avenue about 8pm when they were struck by a southbound sedan.

A spokeswoman said both women suffered head injuries and fractures and were taken to hospital in a stable condition, however the 77-year-old was critical and the 40-year-old had serious injuries.

Police are now trying to contact their families through the Chinese consulate.

A 21-year-old male driver remained at the crash scene.

No charges have been laid but investigations into the crash are continuing.

Anyone with information should contact Crime Stoppers on 1800 333 000.