Fire at Bluescope Steel site

A fire has broken out at the Bluescope Steel plant in Wollongong, south of Sydney. (AAP)

A fire has broken out at the Bluescope Steel plant in Wollongong, south of Sydney. (AAP)

Part of the Bluescope Steel plant in Wollongong has caught fire.

A fire has broken out at the Bluescope Steel plant in Wollongong, south of Sydney.

A Fire and Rescue NSW spokesman said the fire started at 6am (AEST) on Saturday in an underground ducting system and spread to a computer room.

About 30 firefighters had now contained the fire and were still at the scene, the spokesman said.

No one has been hurt.