The attacker reportedly drove cross-country from Las Vegas to New York in the days leading up to the shooting.

New York City is mourning an NYPD officer and three other people killed in Monday night's shooting inside an office building ...

Four people were killed and a fifth was injured in a mass shooting at a Midtown Manhattan office building on Monday. One ...

The shooter was Shane Tamura; authorities say he was intending to target the NFL offices in Manhattan but entered the wrong ...

President Donald Trump expresses support for law enforcement after a Manhattan office shooting that killed NYPD Officer ...

Multiple casualties as gunman opened fire in the lobby of the midtown Manhattan building on Park Avenue that is home to the ...

Four victims are dead, including an NYPD officer and a Blackstone exec, in a shooting at an NYC building housing companies ...

Five people were shot when a gunman opened fire at a Manhattan skyscraper on July 28. Here's what we know so far about the ...

New York's mayor says the father of two was doing what he did best and protecting New Yorkers when he was shot dead on Monday ...

A gunman is believed to be dead after shooting Police are searching for a man they say shot at least one New York Police ...

Four people were killed, including an off-duty NYPD officer, and another man was critically injured in a skyscraper shooting ...

This is a breaking news story. For latest updates, please go to our live blog. An NYPD officer and at least four other ...