The 29-year-old woman who suffered serious burns outside a Dunedin service station has been transferred to Middlemore Hospital's burns unit.
The Dunedin woman was a voluntary patient of Wakari Hospital's mental health service and an investigation into her care would take place, Southern District Health Board adult mental health services clinical leader Dr Brad Strong said.
Emergency services were called to the service station on the corner of Taieri Rd and Berwick St at 7.25pm on Monday.
The woman remains in a critical condition.