A man fled as a detached house went up in flames in the centre of Bristol.
Ambulance crews treated the man outside the house as firefighters battled the flames engulfing the property.
The detached property in the St Philips area of the city was well alight when the first two fire crews arrived.
They sent for back up so they could bring the “serious” blaze under control.
South Western Ambulance Service also sent an incident commander at the scene of the fire.
A spokesman for Avon Fire and Rescue Service said firefighters were called out to a private house at 7.55pm and were still there at 10pm but the fire had been brought under control.
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“Two fire appliances were sent to the incident and they requested two more so there were four fire engines a turntable ladder and two tactical officers,” said the spokesman.
“The property was fully involved in fire and we used two main jets and two high pressure hose reel jets to extinguish the fire.
“One casualty had exited the property before we arrived and was being treated by ambulance personnel as a precaution.”
There are no further details at the moment but the house suffered “significant damage” in the blaze which is believed to have swept through the entire property, sending smoke billowing from doors and windows.
A TV cameraman at the scene tweeted that one man was safe but the whereabouts of a dog was unknown.