A salmonella outbreak potentially linked to produce has sickened at least 172 people in 18 states, including eight in New Hampshire, according to Boston7News.

Health officials think the bacteria may have spread through some form of produce; the list of suspects includes lettuce and 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.

Greg Moore, spokesman for the state Department of Health and Human Services, said no source of the infection has been pinpointed.