A man is fighting for life following a series of explosions inside a Sydney home unit possibly triggered when a gas stove was left on.
Firefighters were called to Trafalgar Parade at inner western Concord shortly after 2am on Saturday, with neighbours reporting hearing loud bangs and windows blowing out.
Crews arrived to discover flames coming from the top floor of the three-storey building.
A man inside the engulfed unit jumped to safety but sustained serious burns and cuts to his head, chest and arms.
An off-duty paramedic treated his injuries before ambulance officers took over and transported him to hospital in a critical condition.
Neighbours managed to evacuate before the blaze took hold.
Police have declared a crime scene at the property and are working with specialist fire investigators to establish a cause.
It's believed the occupant may have lit a cigarette near the unit's stove, triggering the blasts.
