The 13-year-old boy shot in a possible targeted attack at a Staten Island playground has died of his injuries, police said Tuesday — as law enforcement sources revealed that an older teen shooter was nabbed in connection to the deadly violence. The younger teen, identified by the NYPD as Jamoure Harrell, was shot in the head by two masked gunmen just before 4 p.m. Friday inside Reverend Doctor Maggie Howard Playground, near NYCHA’s Stapleton Houses, according to cops. Jamoure was rushed to Richmond University Medical Center, where he was initially listed in critical condition and succumbed to his injuries Monday,...