Brands of peanut butter and almond butter sold at Whole Foods, Trader Joe’s, Safeway and Kroger have been recalled for suspected salmonella contamination.

The Associated Press reports that New York-based Hain Celestial Group, Inc. has pulled Arrowhead Mills peanut butters from the shelves, as well as MaraNatha peanut-and-nut butters.

Other private-label brands sold at the four grocers mentioned were also recalled. According to the AP report, 45 production lots were affected.

Routine FDA testing found that the nut butters could pose a contamination risk that may be linked to four reported illnesses.

The FDA did not comment on how many jars of nut butter were recalled.