Police arson experts will investigate a fatal house fire in south-east Melbourne overnight.
Emergency services were called to the blaze at a home on Lyppards Road in Langwarrin about 2.10am.
Three people escaped the property with no injuries.
But a fourth yet-to-be formally identified person was found dead inside a rear bungalow.
Police are at the scene this morning, but the exact cause of the fire is yet to be determined.
An arson chemist will attend there later today.
