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Authorities Friday evening arrested a third teenager and charged him with manslaughter in the death of a 47-year-old Summit man, said Prosecutor Theodore J. Romankow.

Following an intense investigation by the Union County Homicide Task Force, police arrested Nigel Dumas, 19, of Morristown, for his role in the attack. He was arrested around 7:20 p.m. in Morristown and will be lodged in the Union County Jail on $100,000 bail.

Dumas is the third teenager to be arrested in connection with the death of Abelino Mazaniego. According to the investigation, the victim was on a bench in the promenade off of Springfield Avenue in Summit on July 17 around 9:25 p.m. when he was approached by a group of teenagers, said Romankow. The teenagers, who facilitated the attack, caused serious injury to Mazaniego. It appears to be an unprovoked attack and the case remains under investigation. The victim was transported to Overlook Hospital and died on Tuesday afternoon, having never regained consciousness, said Romankow.

Two suspects, teenagers from Summit, were identified and arrested earlier this week in connection with the case. 18-year-old Khayri Williams-Clark and a 17-year-old were taken into custody and are being held in Union County.

The identity of the 17-year-old is not available because of his age.

Williams-Clark is being held on $100,000 bail.

Investigators continue to gather and examining evidence in this case and continue to take witness statements.

— NEWJERSEYNEWSROOM.COM