A body has been found after three people escaped a house fire.

The blaze took hold of the residence on Lyppards Rd at Langwarrin in Melbourne about 2.10am on Friday.

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Three occupants escaped to safety without injuries.

However, a fourth person’s body was found inside a rear bungalow.

The deceased person has not been formally identified at this stage.

“The exact cause of the fire is yet to be determined,” Victoria Police said.

“An arson chemist will attend the scene later today.”

It is the third residential fire in three days to result in injury or death.

In a separate incident on Thursday afternoon, a body was located inside a unit at Frankston.

The residence on Franklin Court “was engulfed in flames” about 4pm, Victoria Police said.

Investigators believe witnesses alerted emergency services to the blaze.

While evacuating the property, emergency services found a body inside the unit.

They have not been formally identified at this stage.

Victoria Police are investigating the fire and urge anyone with relevant information to come forward.

Two young girls and a woman were injured in a house fire on Terrigal St in Chadstone, in Melbourne’s southeast, about 9.40pm on Wednesday.

The primary school-aged girls and a 37-year-old woman were pulled unconscious from the home after a gas cylinder exploded and sparked a fire.

The girls were rushed to The Royal Children’s Hospital while the woman was taken to The Alfred Hospital.

“They were unconscious, so they were carried out and taken out to the front where Ambulance Victoria paramedics and firefighters were waiting,” Fire Rescue Victoria Commander Paul Eckholdt said.

“They did have some burns and they also had some airway burns as well.”

The girls have since stabilised and are expected to recover, while the woman’s condition remains critical.

Victoria Police are treating the fire as suspicious and are speaking with a 36-year-old man who also lives at the home.

Officers spoke to the male resident on Thursday morning, Murray said.

The man was not at the home when emergency services arrived on Wednesday.