One person has been pulled from a blazing house fire in Oamaru.

Two fire crews were called to the burning building on Test St, around 8.30am today.

Fire Service southern shift manager Andrew Norris said one person was found inside the blaze. He could not confirm the state of the person.

"It was well involved on arrival," Norris said.

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"The first crew to arrive was told someone was inside. The second crew were a couple of minutes behind them. One person has been located."

Police attended the incident.