Authorities are working with stunned NSW businesses to stem the spread of invasive red fire ants, which authorities believe may have been brought across the Queensland border concealed in turf.
Agriculture minister Tara Moriarty told parliament on Tuesday the ants were discovered at an unused council-owned site in South Murwillumbah on Friday afternoon.
She said authorities are exploring whether the ants may have been concealed in turf brought to the site from Queensland and whether biosecurity laws had been breached.
