MINNEAPOLIS (AP) — At least 23 people in 14 states have been sickened by the same strain of salmonella found in two breakfast cereals recalled by Malt-O-Meal, the federal Food and Drug Administration said Saturday.

Officials in Minnesota are investigating whether a case in that state might be linked to the cereals produced by the Minneapolis-based company, the state health department said.

Malt-O-Meal voluntarily recalled its unsweetened Puffed Rice and Puffed Wheat cereals April 5 after finding salmonella contamination during routine testing. The affected bags were produced in the past 12 months in Northfield.

Three people have been hospitalized, but no deaths have been reported, according to the Centers for Disease Control and Prevention.

The CDC said that as of Friday it had received reports of 21 people ill with the same salmonella strain in 13 states. California reported 1; Colorado, 1; Delaware, 1; Maine, 3; Massachusetts, 2; Minnesota, 1; North Dakota, 1; New Hampshire, 2; New Jersey, 3; New York, 3; Pennsylvania, 1; Rhode Island, 1; and Vermont, 1.

It wasn't clear Saturday what the 14th state was or whether the two additional cases were from there.