Police continue to seek witnesses to a single vehicle crash in Canberra at the weekend.
The smash occurred around 6:30 Saturday morning in the northbound lanes of Capital Circle adjacent to Parliament House.
A grey Lexus SUV travelled down Adelaide Avenue and failed to negotiate the bend as the road becomes Capital Circle, with the vehicle subsequently rolling.
Two occupants of the vehicle left the scene while two others were treated for their injuries and transported to hospital.
Police are urging any occupants who left the scene to seek medical assistance as soon as possible.
Police are also asking any witness who has not already spoken to police or any driver with dash-cam footage of the grey Lexus SUV prior to the collision to come forward.