Two children were taken to hospital in a night that saw several fires erupt around Melbourne.
A car crashed into a hair salon in Bay Street, Port Melbourne, just after 1.30am.
The car and shop were both totally destroyed in the subsequent blaze.
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A resident living above the salon was able to get out uninjured.
Paramedics confirmed they took a primary-school aged girl, a teenage girl, and a woman in her 40s to hospital, all in a stable condition.
Police were told a person was spotted running from the scene.
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The fire is being treated as suspicious.
It came on a busy night for firefighters, after they were also called to an apartment block in Clark Street, Richmond, at about 9.15pm.
Police said it appeared a resident had set fire to his own apartment, which in turn damaged four others.
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The 37-year-old man was arrested. Nobody was injured, but several people had to flee their homes.
A fire also erupted at a disused retirement village on Gladesville Boulevard, Patterson Lakes, at about 1.20am.
The fire has been deemed suspicious and a crime scene guard was placed.
Anybody with information about any of these incidents is urged to contact Crime Stoppers on 1800 333 000 or online.
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