Federal officials have identified a grower in Sinaloa, Mexico, as the source of jalapeño peppers linked to a multistate salmonella outbreak in the United States. At least 345 people in 27 states have been reported sick from the salmonella strain, with most cases in Minnesota and Colorado. No deaths have been reported, but 36 people have been hospitalized.

The Centers for Disease Control and Prevention (CDC) said Wednesday that the peppers were brought into the U.S. by Coast Citrus Distributors. The company has recalled the peppers and is notifying its customers, which include some prominent Mexican food restaurant chains. Coast Citrus Distributors did not immediately respond to a Thursday voicemail seeking comment.

The Food and Drug Administration (FDA) reported that of 191 people interviewed in the outbreak investigation, 177 (93%) said they had eaten at a Mexican-style restaurant, including Chipotle Mexican Grill and Qdoba, between June 14 and July 14.

Chipotle Mexican Grill said Tuesday it had removed jalapeños from some of its restaurants. Qdoba said Wednesday it had proactively removed jalapeños from all of its restaurants. Given their actions, CDC officials said neither establishment is considered a current ongoing risk to consumers in this outbreak.

The FDA is investigating whether any of the jalapeños reached grocery stores. The agency may announce additional actions on its recalls webpage, health officials said.

Salmonella bacteria cause about 1.35 million infections in the U.S. every year, with outbreaks linked to sources such as cucumbers, eggs, unpasteurized milk, fresh basil, geckos, and pet bearded dragons. Within hours or days of exposure, infected people can suffer from diarrhea, fever, and stomach cramps. The illness usually lasts four to seven days, and most recover without treatment. Young children, older adults, and people with weakened immune systems are at higher risk for severe illness, according to the CDC.

Shares of Chipotle, based in Newport Beach, California, tumbled nearly 10% on Tuesday and have not recovered. Fast-casual chains like Chipotle have seen less foot traffic from middle- and lower-income customers due to broader inflation, and recent headlines about foodborne illnesses may be another negative factor.