Tests by the Michigan Department of Community Health suggest a common bacteria caused foodborne illness among customers of Bonicki's Restaurant and Sports Bistro in Muskegon.

Public health workers say clostridium perfringens is found in soils, sediments, and human and animal intestines -- but it typically causes illness when foods are served after improper storage or stored at inadequate temperatures.

The Health Officer at Public Health-Muskegon County says his team is working with the restaurant to improve their food storage practices.