Police are appealing for witnesses or drivers with dash cam footage to come forward following a serious two-car crash in Brisbane's north.
Emergency services were called to the intersection of Gympie and Linkfield roads at Bald Hills about 8.30am on Sunday.
A 70-year-old woman was taken to hospital in a serious condition.
The four other occupants of the two vehicles, including children, were also taken to hospital for medical treatment.
The forensic crash unit is investigating and has appealed for anyone with information to contact police.