(AP) - So many people came down with alcohol-related illnesses at Keith Urban's concert Saturday that fire officials declared a mass casualty incident.

The concert in Mansfield, Massachusetts, required ambulances from six communities as well as the four private ones that staff the concert venue.

The mass casualty incident declaration came just before 9 p.m. and typically indicates a large number of people with potential illnesses or injuries. Mansfield Deputy Fire Chief James Puleo could not confirm the number of people taken to hospitals.

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