A Nelligen Rural Fire Service spokesperson said up to five RFS and Fire and Rescue crews were working to contain the six hectare fire located in bushland near Runnyford Road and Reid Street.

The crews had been battling the blaze since 2pm, which initially posed a threat to two properties.

Both properties are now safe, with crews hopeful the blaze will be under control some time this afternoon.

The cause of the blaze is not yet known.

More details as they come to hand.