Union County Prosecutor Theodore J. Romankow says 21-year-old Nigel Dumas of Morristown, 20-year-old Khayri Williams-Clark and 19-year-old Hakean Fitzgerald, both of Summit, entered their pleas Wednesday.
Prosecutors say robbery was the motive in the July 2010 attack on Abelino Mazariego in Summit. The 47-year-old father of four died days later.
Authorities say a fourth teen, who was not charged, videotaped the attack. Police were alerted to the crime after a friend of the victim's family told them she had seen the video and they alerted police.
Fitzgerald faces 18 years in prison and both Dumas and Williams-Clark face 15 years in prison at their March 8 sentencing.
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