More than a dozen people are hospitalized with what health officials suspect is an E. coli bacteria ingested at a Taco John’s restaurant in Cedar Falls.

According to the Black Hawk County Health Department, at least 33 people were suffering from severe diarrhea and other symptoms after dining at the restaurant today. Fourteen have been hospitalized.

Local and state health officials say preliminary test results suggest E. coli is to blame, though a final report isn’t expected until Monday.

Health officials say the Taco John’s in Cedar Falls remains open and has removed any suspected ingredients from its menu and sanitized the facility.