Brooklyn Central Booking prisoner is third to die this year after suffering medical emergency while detained

Police have opened an investigation into another death of a prisoner who had been brought to Brooklyn's Central Booking facility on Wednesday.According to police sources, the 46-year-old unnamed male prisoner underwent a medical episode inside 120 Schermerhorn St. in Downtown Brooklyn just after 9:30 a.m. on Sept. 7.Sources say that the man had been cuffed at around 1:34 p.m. on Sept. 6 near the Cypress Hills Houses located at 305 Fountain Ave. for possession of a controlled substance. He was kn