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

Wesley LePatner, 43, was among the four people killed by a gunman who stormed the Park Avenue building where she worked on ...

Officials said the gunman fatally shot himself after his attack, which set off a chaotic scene that rippled out into the ...

Bankers and traders returned to work on a somber Tuesday morning in Midtown Manhattan, New York's financial epicenter, one ...

Investment giant Blackstone Inc said on Tuesday that a senior executive was among the people killed when a gunman, carrying ...

The New York City office building at 345 Park Avenue where a deadly shooting occurred serves is the headquarters of ...

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

A New York police officer and a senior executive with investment firm Blackstone were among four people killed Monday when a ...

Investigators are combing through evidence in the wake of New York City’s deadliest mass shooting since 2000, trying to ...

A man carrying a high-powered rifle shot and killed four people, including an off-duty police officer working security in Midtown Manhattan, sources told ABC News.

Wesley LePatner, a Blackstone executive who lived in Roslyn, was among those killed in Monday's mass shooting in Midtown ...

Four people were killed, including an off-duty New York City police officer, when a gunman opened fire in an office tower ...