Cops cuffed a 17-year-old accused of stabbing and killing 18-year-old Nelson Rafael Pena near the corner of Hester and Forsyth Streets on Nov. 18. Police charged Victor Fong with second-degree murder when he surrendered at the Fifth Precinct station house on Monday. According to cops, Fong and another man approached Pena and an 18-year-old whose name has not been released as the victim walked home from his job at Footlocker in SoHo. A short time later, at around 6 pm, Fong allegedly stabbed Pena in the leg and chest, and stabbed the 18-year-old, who survived the attack, in the neck. Pena's relatives say he did not know the attacker and that he was stabbed "over a look." Police believe the suspect and the victim knew one another through people in the neighborhood and that there was a dispute behind the stabbing, which was not gang-related. Fong's mother defended her son: “He’s a good boy, a very, very good boy.”