An arrest has been made in the shooting death of a 50-year-old man earlier this month in Newark, authorities said. A 16-year-old has been charged with unlawful possession of a firearm in connection with the the death of Kyle Eley, of Irvington, the Essex County Prosecutor’s Office said. Eley was found shot on the corner of South Orange Avenue and Munn Avenue in Newark on Sept. 14, officials said. He died of his injuries at a local hospital that evening. The teen, who was not identified because he is a minor, is being held at juvenile detention center. The investigation is continuing. Anyone wi…