A woman is in hospital under police guard after a suspicious house fire in Melbourne's south-east left two men fighting for life.
The fire tore through a share house on Sunburnt Circuit in Clyde North about 1.45am today.
Neighbours claim they saw a man and woman fighting in the driveway minutes before the home went up in flames.
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Two men aged 46 and 44 were taken to hospital with life-threatening injuries.
A 29-year-old woman was taken to hospital with non-life-threatening upper and lower body injuries.
She remains in hospital under police guard.
It took firefighters around two hours to bring the fierce flames under control.
A 43-year-old woman, a 12-year-old child and a support dog managed to escape the blaze unharmed.
A crime scene has been set up, where arson detectives are sifting through the home to figure out what sparked the blaze.
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