NY's Summer Street celebration begins today... Police are investigating a fatal stabbing in the Bronx... A 15-year-old boy was found dead on subway tracks in Far Rockaway...

Another suspected subway surfing death occurred in Queens. Metal detectors are coming to the subways as part of a new program... A man has been arrested for punching a 72-year-old man earlier this week...

Two women killed in a murder suicide on the Upper East Side ... American's Olympic interest is down ... NYPD installing weapon detectors in some subway stations