Police are investigating a suspicious house at Burton early this morning.
Just after 1am, Thursday 17 December police and MFS were called to Sittella Avenue after reports of a vacant house on fire.
MFS quickly extinguished the blaze but the house was sustained extensive damage.
Police Fire Cause Investigators attended and examined the scene and determined the fire suspicious.
Anyone with any information is asked to contact Crime Stoppers on 1800 333 000 or report online at www.crimestopperssa.com.au