The number of E. coli cases tied to an outbreak at Los Burritos Mexicanos in Lombard, Ill., has risen to 9 confirmed and another 8 probable, according to the DuPage County Health Department. As Food Safety News reported yesterday, the restaurant was closed on Friday for an E. coli investigation. The restaurant remained closed through Tuesday. Out of the 9 confirmed illnesses, 6 people were hospitalized, though all have since been discharged. Health officials are investigating the possible cause of the outbreak. The restaurant managers said no employees have been sick and there have been no problems reported at the restaurant chain’s other two locations in Villa Park and St. Charles, which use the same food distributors.