Police are investigating whether two vehicle fires were deliberately lit.
At about 12.15am on March 5, police were called to Higinbotham Street in Watson after locals reported two vehicles on fire.
A crowd had gathered at the scene and many said they had heard an explosion. Police and three fire trucks attended.
Police now wish to speak to a man pictured in CCTV footage from Kaleen BP Service Station.
Anyone who has information about the fires or can identify the man in the picture is urged to contact Crime Stoppers on 1800 333 000 or at act.crimestoppers.com.au.