A salmonella outbreak potentially linked to produce has sickened at least 172 people in 18 states, reports KARE11 News.

Health officials think the bacteria may have spread through some form of produce — the list of suspects includes tomatoes. But the illnesses have not been tied to any specific product, chain, restaurants or supermarkets.

No one has died in the outbreak, which stems from a common form of salmonella bacteria. Eleven people have been hospitalized, health officials said.

"We’re very early in the investigation," said Dave Daigle, a spokesman for the CDC.

Health officials estimate that more than 1.4 million cases of salmonellosis occur in the U.S. each year. About 1.3 million of those cases come from food.