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Selena Gomez's appearance at a shopping center in Massachusetts descended into chaos on Saturday -- with three fans hospitalized as they clamored to see their idol.

The "Wizards of Waverly Place" star was taking part in a question and answer (Q&A) session at the Emerald Square Mall in North Attleboro and hundreds of devotees turned up to glimpse the star.

But an escalator in the center came to an abrupt halt, sending several fans flying.

Five people were injured, and three were taken to a local hospital for treatment, according to TMZ.com.