Ronell Marte, 26,was shot in the chest just before 2:50 a.m.
He was rushed to Saint Barnabas Hospital where he was pronounced dead.
No arrests were immediately made.
A 17-year-old was fatally shot in the same park in June.
Thursday's shooting is the latest in a string of recent violence in the borough. It has been highlighted as an issue in the mayoral race.
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