UPDATE: A 53-year-old man from Dunmora is currently under police guard at Maryborough Hospital after being involved in an incident at a residence at Oakhurst this morning.
Initial information suggests around 9am the man drove a prime-mover into a dwelling on Lillipilli Drive, damaging two motor vehicles and the residence, before setting the house alight.
Seven people were inside the residence at the time. A 16-year-old girl suffered burns and has since been flown to Brisbane for treatment. All seven managed to escape the home before it was destroyed by fire.
The 53-year-old man also suffered burns and is expected to be flown to Brisbane for treatment.
Police investigations are continuing.
Anyone with information which could assist with this matter should contact Crime Stoppers anonymously via 1800 333 000 or crimestoppers.com.au 24hrs a day.
EARLIER: Emergency Service crews in Maryborough have attended a house fire at Oakhurst.
The blaze is believed to have started about 9am Sunday.
It is understood two occupants have been taken to hospital.
Police are investigating.