Relying on a GPS device placed in a decoy pill bottle, police officers tracked an armed man suspected of robbing a pharmacy on Friday afternoon and fatally shot him during a confrontation on the Upper East Side, police officials said. The decoy bottle was among a cache of drugs taken in an armed robbery about 1:30 p.m. from HealthSource Pharmacy, at Second Avenue and East 68th Street, according to a police official, who was not authorized to speak about the investigation. The suspect, identified by the police as Scott Kato, 45, of Mount Vernon, N.Y., was believed to have robbed...