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Authorities say several dozen people were treated for alcohol-related illnesses at a weekend concert at the Xfinity Center in Mansfield.
Police and fire officials say ambulances from five surrounding communities responded to the Keith Urban concert on Saturday night.
At least 46 people were treated and 22 taken to local hospitals.
Police said more than 50 people were taken into protective custody at the concert and some could face charges.
Officials said about 18,000 country music fans attended the concert at the outside venue.