BOSTON (CBS) – Concerns over the coronavirus have forced the ACE Comic Con in Boston to be postponed.

The fan event was scheduled to be held March 20-22 at the Boston Convention and Exhibition Center.

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ACE Comic Con said after the state of emergency was declared in Massachusetts, “running the event at its regularly scheduled date/time is not possible due to ‘force majeure.’”

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Chris Evans, Jake Gyllenhaal, Tessa Thompson and Chris Hemsworth were among the guests scheduled to attend.

“We feel for anyone and everyone affected by the COVID-19 virus,” Ace Comic Con said. “We hope everyone stays safe and healthy, and to those already ill, we wish a speedy recovery.”

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Organizers are working with the BCEC to reschedule the event.