MILWAUKEE — Kellogg Co. said Monday federal authorities have confirmed salmonella was found in a package of its peanut butter crackers, as a Midwestern grocer and General Mills Corp. recalled some of its products because of the scare.

Kellogg had recalled 16 products last week because of the possibility of salmonella contamination.

On Monday the company said contamination was confirmed by the Food and Drug Administration in a package of Austin Quality Foods Toasty Crackers with Peanut Butter.

Food companies and retailers have been recalling products with peanut butter in them because of suspicion of contamination amid a salmonella outbreak that has killed at least six people and sickened more than 470 others in 43 states.

At least 90 people have been hospitalized.

Also Monday, Midwestern grocer and retailer Meijer Inc. said it was recalling two types of crackers and two varieties of ice cream because of the possibility of salmonella contamination: Meijer brand Cheese and Peanut Butter and Toasty Peanut Butter sandwich crackers, and Peanut Butter and Jelly and Peanut Butter Cup ice cream.

Golden Valley, Minn.-based General Mills said in a news release Monday afternoon that it was recalling two flavors of snack bars: LARABAR Peanut Butter Cookie snack bars and JamFrakas Peanut Butter Blisscrisp snack bars.

The company said the recall affected 15,000 cases and no illnesses have been reported. General Mills said the recall did not affect any other products it makes.

The government on Saturday had advised consumers to avoid eating cookies, cakes, ice cream and other foods containing peanut butter until health officials learn more about the contamination.

Officials said that most peanut butter sold in jars at supermarkets appears to be safe.

Officials have been focusing on peanut paste and peanut butter made at Peanut Corp. of America’s plant in Blakely, Ga.