A Geelong West house has been damaged in an overnight fire.
Crews were called to Clarence Street just after 10.30pm Sunday, finding the property well alight.
It took more than 30 minutes to bring the flames under control before it was declared safe just before 11.40pm.
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Five CFA vehicles were on scene at one stage, supported by the FRV.
The CFA says the residents managed to escape without injury.
Geelong detectives will investigate the cause today, and say it is being treated as suspicious.
Anyone with information is being urged to call Crime Stoppers on 1800 333 000.