(Aug. 16) PLEASANTON, Calif. — Fearing a possible salmonella contamination, Safeway is recalling green onions it sold in early August in Northern California and western Nevada stores.

The voluntary recall involves green onions, also called scallions, that were sold Aug. 3-7 in Safeway and Pak ’n Save stores.

The green onions were from the Mexican state of Baja California, said Jim Gorny, vice president of technology and regulatory affairs for the Alexandria, Va.-based International Fresh-cut Produce Association, in a member alert. He said more information is needed on how the product was contaminated.

Routine testing conducted by the California Department of Food and Agriculture’s Center for Analytical Chemistry detected the salmonella, Safeway announced.

Though no illnesses have been reported, the grocery chain was recalling the product as a precautionary measure, Frank Calfas, Safeway’s Northern California division president said in a news release.

Gorny said the recall is geographically isolated and that there is no evidence of salmonella illnesses linked to the tainted fresh green onions.