Police have located a man and a woman who were the subject of a public appeal following the death of a 65-year-old man in Capalaba on September 1.
They are both assisting police with their inquiries.
It will be alleged that on September 1, the man had petrol poured on him before being set alight.
A 34-year-old Kooralbyn man has since been charged with his murder.
If you have information for police, contact Policelink on 131 444 or provide information using the online form 24hrs per day.
You can report information about crime anonymously to Crime Stoppers, a registered charity and community volunteer organisation, by calling 1800 333 000 or via crimestoppersqld.com.au 24hrs per day.