According to the Chicago Tribune, the DuPage County Health Department closed an unnamed Lombard restaurant in connection with the investigation into four confirmed cases of E. coli in people admitted to a county hospital this week, officials said today.

Jason Gerwig, a public information officer for the DuPage County Health Department, said his agency is looking at a Lombard restaurant as a possible source for the outbreak, and said the restaurant had been temporarily closed at 5 p.m. Friday as part of the investigation. Gerwig said the total number of cases confirmed or under investigation is about 10.

The four confirmed cases were all hospitalized at Advocate Good Samaritan Hospital in Downers Grove, officials said Friday. Jim Silvestri, a spokesman for Good Samaritan, said Friday that eight people had come to the hospital feeling ill and that four had been admitted.