The U.S. Food and Drug Administration said Saturday that federal, state and local officials are investigating the outbreak linked to foods produced by Fresh & Ready Foods LLC of San Fernando, California. The FDA says the 10 people who fell ill were in California and Nevada, and required hospitalization.

The U.S. Food and Drug Administration (FDA) is investigating a Listeria outbreak in several Ready-to-Eat foods sold in Washington State, the Administration said in a release.