A Chipotle restaurant has been shut down due to an outbreak of illness among Boston College students who ate there, CBS Boston reports.

The college says 30 students, including members of the men's basketball team, have complained of gastrointestinal symptoms, including vomiting and diarrhea. They all had eaten at the Chipotle restaurant located at Cleveland Circle over this past weekend.

The Massachusetts Department of Public Health is now investigating, but it has not yet determined if those illnesses are related to the national outbreak of E. coli at Chipotle.

The FDA still has not yet determined which ingredient at Chipotle might be making people sick.

Get Breaking News Delivered to Your Inbox

Chipotle shut down 43 restaurants in Washington state and Oregon after the outbreak first started in late October. Those have since reopened. Additional cases of illness have been reported in California, Minnesota, New York, and Ohio.

Chipotle (CMG) shares continued to fall Monday even though the chain known for its burritos and bowls has committed to heightened food safety standards.

In a statement, Chipotle said: "The safety and well-being of our customers is always our highest priority, so our restaurant at Cleveland Circle in Boston is temporarily closed while we work with local health officials to investigate a number of illnesses among Boston College students. We do not have any evidence to suggest that this incident is related the previous E. coli incident. There are no confirmed cases of E. coli connected to Chipotle in Massachusetts."

The Boston College office of communications provided CBS News with a statement, saying, "Students who are experiencing these gastrointestinal symptoms are encouraged to seek medical care either at BC Health Services or from their own physician."