Emergency services rushed to Bruce Street around 12.30pm, where a fire had taken hold in an upstairs unit within a large block of apartments.

Three crews from Fire and Rescue NSW's Turvey Park brigade managed to bring the flames under control in around 20 minutes, firefighters said.

They then conducted checks to ensure it hadn't spread further through the building.

The occupant of the unit was home at the time but managed to evacuate safely and was unharmed in the fire, leading firefighter Aaron Campbell from the Turvey Park brigade said.

In other news

Investigations into how the fire came to start are under way, with police and firefighters still at the scene.

A spokesman for NSW Ambulance confirmed a crew had been sent to the fire just before 12.30pm, however no one required treatment and paramedics remained at the scene on standby.

The home was by this stage only a charred shell, with its ceiling badly damaged and smashed glass from its destroyed windows lying on the ground.

Riverina Police acting inspector Nigel Turney said the matter would be subject to an ongoing police investigation.

Acting inspector Turney said police attended the unit at 12.29pm yesterday. "By then it was well alight and fire crews were on the scene," he said. Mr Turney said police were treating the fire as suspicious.