Brooklyn nurse, 28, killed in hit-and-run crash after working night shift; driver still at large

A 28-year-old nurse heading home after working the night shift at a Brooklyn hospital was fatally struck by a hit-and-run driver on Saturday.According to law enforcement sources, the nurse, identified as Jiayi Zheng of 55th Street in Brooklyn, was struck at around 7:40 a.m. on Aug. 29 at the intersection of 55th Street and Third Avenue in Sunset Park. Police said a 2014 Cadillac traveling southbound on Third Avenue hit her as she crossed the street within the crosswalk. She suffered severe head