Police say there was some kind of disturbance at Wilde Memorial Park on Maple Avenue in Glen Rock around 7:30 p.m. Tuesday.
The victim was taken to the hospital where he is expected to be okay.
There is no word yet if anybody is in custody for the shooting, but police say there is no ongoing threat.
There was a large police presence at the scene for much of the night on Tuesday, and officials say the area will remain closed as they investigate what happened.
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NJ man accused of attacking mechanic with bleach at service station
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