NEW YORK (CBSNewYork) – A Pennsylvania man is set to be arraigned on murder charges in the brutal killing of 15-year-old Lesandro “Junior” Guzman-Feliz, the 14th person arrested in connection to case.

Frederick Then, 20, of Reading, Pa., turned himself in to the NYPD on Sunday, reports CBS2’s Mary Calvi.

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He is accused in the deadly machete attack outside a Bronx bodega back this summer.

On June 20, Guzman-Feliz was dragged out of a bodega in Belmont and killed by several men carrying knives and machetes. Police said it was a case of mistaken identity.

Previous suspects facing charges include Luis A. Cabrarasantos, 25; Kevin Alvarez, 19; Elvin Garcia, 23; Antonio Rodriguez Hernandez Santiago, 24; Manuel Rivera, 18; Danel Fernandez, 21; Jonaiki Martinez Estrella, 24; Jose Muniz, 22; Jose Tavarez, 21; Danilo Payamps Pacheco, 21; Diego Suero, 29; Gabriel Ramirez Concepcion, 26; Luis Cabrera Santos, AKA Luis Rodriguez, 25; and Ronald Ureña, 29.

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They charged with second-degree murder, first-degree manslaughter, second-degree conspiracy, first-degree gang assault, second-degree gang assault and fourth-degree criminal possession of a weapon.

Additionally, five of the suspects – Garcia, Rodriguez Hernandez Santiago, Rivera and Muniz – are charged with first-degree murder, including torture.

The NYPD says the suspects are members of the Trinitarios gang and wrongly targeted Guzman-Feliz, who police say had no connection to gang activity. He was in the NYPD’s Explorers program for aspiring young officers.

Police described the violence as the result of “intra-gang conflict” between the Los Soros sect, allegedly led by Diego Suero, and the Sunset sect.

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Guzman-Feliz’s death caught national attention after video was released showing him being dragged out of a Bronx bodega and stabbed with machetes. The #JusticeForJunior movement seeks to memorialize the teen and put a spotlight on gang violence.