Chamberlain Farms, Owensville, Ind., has expanded its original recall of cantaloupes to include watermelons distributed over this past growing season. The watermelons could have been contaminated with Salmonella newport, according to a press release from St. Louis-based Schnuck Markets, Inc.

"This is an evolving situation," Lori Willis, spokeswoman for Schnuck Markets, said Sept. 10. "As far as the reason why (the recall was expanded to watermelon), they said (the fruit) was possibly contaminated with salmonella as well," she said.

For Schnucks, Logli and Hilander stores in Missouri, Illinois, Wisconsin and Iowa (stores outside of Indiana), the recalled watermelons can be identified by a sticker — "Indian Hills — Product of USA."

Watermelons with that sticker should not be eaten but can be returned to the store for a refund.

Meanwhile, customers of the five Indiana Schnucks stores, where the product is delivered directly by the local grower, will not see stickers. Those watermelons without stickers can be returned to the store for a full refund.

The release said that as of Sept. 7, all watermelons in Schnucks stores originate from farms outside the recall zone.