Officers responded to Linden Park on North Main Street in the borough, and discovered playground equipment on fire. Two portable restrooms were also found knocked over.
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The suspects were later found walking in the area. They were arrested and face charges ranging from criminal mischief to reckless burning.
Police have identified the suspects as 19-year-old Julius Castro, 21-year-old Benjamin Day, and 21-year-old Colin LeClerc.