SEATTLE-- A health alert has been issued after four customers were sickened after eating Costco Rotisserie Chicken Salad sold from the Costco store in Lynnwood, Wash.

The U.S. Department of Agriculture’s Food Safety and Inspection Service (FSIS) issued the health alert over concerns the illnesses were caused by Salmonella associated with the chicken salad.

According to the FSIS, the salad was produced Aug.26 through Sept.2, 2016. The Center for Disease Control notified the FSIS of a Salmonella investigation and later determined that there was a possible link between the salad and the illnesses.

The FSIS is continuing their investigation with Costco and public health partners, and will provide more information as it becomes available.

For symptoms and prevention efforts of Salmonella, click here.