Police are investigating a house fire at Mansfield Park this morning.
Emergency services responded to reports of smoke coming from a vacant property on Dudley Street, Mansfield Park just before 7.15am on Saturday 6 February.
MFS crews extinguished the fire, which appears to have started at the rear of the property and spread to the roof.
The cause of the fire is not yet known, but police are treating it as suspicious.
Western District CIB detectives and crime scene investigators attended the scene this morning and are investigating.
Anyone who saw or heard any suspicious activity at the abandoned property in recent days or overnight is asked to contact Crime Stoppers on 1800 333 000 or online at www.crimestopperssa.com.au