Multiple casualties as gunman opened fire in the lobby of the midtown Manhattan building on Park Avenue that is home to the Blackstone investment firm and other corporations before moving to other floors.

An NYPD officer, a Blackstone executive, a Rudin Management associate and a security guard were killed in the shooting at Manhattan's 345 Park Avenue.

NYC Mayor Eric Adams shared new details about the deadly Midtown Manhattan office shooting, including a possible NFL connection and the gunman's cross-country journey.

The police officer who was killed when a gunman opened fire in a Manhattan building was a dedicated father who was working a second job as a security guard.

NYPD cop Didarul Islam, the first victim of Monday’s deadly mass shooting in Midtown Manhattan, was remembered as a true Big Apple hero.

This is a breaking news story. For latest updates, please go to our live blog. An NYPD officer and at least four other victims were killed in a shooting at an office skyscraper in midtown Manhattan Monday evening,

The four victims who were killed by a gunman inside a Midtown Manhattan office building ​on Monday night have been identified.

Officials said the gunman fatally shot himself after his attack, which set off a chaotic scene that rippled out into the heart of Manhattan during rush hour.

Mamdani is currently in Uganda celebrating his nuptials at a heavily-guarded private compound in the wealthy Buziga Hill area outside the capital city Kampala.

New York City police officers responded Monday to an active shooter situation in Midtown Manhattan. At least one police officer and two civilians were shot, according to the NYPD. CBS News New York reports.