New York City is mourning NYPD Officer Didarul Islam and three other people killed in Monday's shooting inside an office ...

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

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

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

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

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

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

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

A police officer was among the dead. The gunman carried an M4 rifle and died after shooting himself in the chest, police said ...

Traders resumed work with heavy hearts after a Midtown Manhattan shooting claimed four lives, including Blackstone senior ...

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

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.