Suspected NSW drug house goes up in flames

Police say they discovered equipment that may have been used to manufacture illegal drugs following a housefire in southwestern Sydney.

Police are investigating a blaze at what's believed to be a suburban Sydney drug lab.

Firefighters arrived at the Yagoona house, in the city's southwest, just after 6am (AEDT) on Saturday to find it well alight.

No one was inside, police say.

The flames were extinguished and a crime scene established at the Marion Street home.

Police say they located equipment inside the house that is suspected of being used to manufacture prohibited drugs.

Investigations continue, with Fire & Rescue NSW Hazmat officers helping determine what sparked the fire.