Mass shooting in New York City leaves at least six dead, including the suspected gunman

Incident Overview - Active shooter incident reported at 345 Park Avenue in Midtown Manhattan [1] - Suspect, Shane Devon Tamura of Las Vegas, found dead from a self-inflicted gunshot wound on the 33rd floor [2] - NYPD circulated a photo of a person with a long gun in connection with the shooting [2] Location and Companies Affected - 345 Park Avenue is the headquarters of the NFL, Blackstone, and KPMG [3] - Approximately 100 people were hiding inside the building [3] Response and Safety Measures - Large police presence cordoned off the section of Midtown Manhattan [3] - Office workers barricaded themselves using tables, couches, and office chairs [5] - NYPD believes the shooting was the work of a lone gunman [5] - NYPD reports the scene is contained [4] Timeline - Incident began around 6 p.m. as people were heading home [3]