MONTGOMERY, Ala. (WTVA) -- The Alabama Department of Public Health says three people who tested positive for salmonella had eaten at the same Russellville restaurant.
Dr. Karen Landers say they are looking into the foodbourne outbreak after the people said they had eaten at El Patron.
Officials say there are other potential cases in Franklin County still under investigation.
Health experts say symptoms of salmonella usually occur within 6 to 72 hours of the infection and most people recover without treatment.
Those include diarrhea, nausea and vomiting, abdominal cramping and fever.
Final test results will be released at a later date.