(CNN) — During evening rush hour in New York City on Monday, a man calmly walked into a Park Avenue office building lobby and killed a police officer, then opened fire on other innocent strangers.

Officer Didarul Islam, 36, who was guarding the building on a paid security job when he was killed, had served as a police ...

What we know about Tamura’s life, how he got the assault rifle that he used to kill an NYPD officer and three others, and the ...

A man stalked through a Manhattan office tower firing a rifle, killing four people, including a New York City police officer, ...

Family and friends gathered at Central Synagogue to mourn Wesley LePatner, one of four victims killed in Manhattan office ...

Blackstone told employees on Friday it will reopen its New York headquarters on August 4, a week after shuttering it in the ...

There were 23 shell casings and 13 bullet fragments recovered from the lobby of 345 Park Avenue and 24 spent shell casings on ...

Roger Goodell also gave a health update on the league employee who was seriously injured in the gun attack that killed four ...

NEW YORK -- Wesley LePatner, a senior executive at Blackstone, was laid to rest on Thursday. She was one of four killed after a gunman opened fire inside a Midtown Manhattan office building earlier ...

A vigil will also be held Friday night for NYPD Officer Didarul Islam so the community can come together in mourning. CBS ...

An off-duty New York City police officer and an executive at an investment firm were among four people killed by a gunman at a Manhattan office tower ...

Four people, including an off-duty New York City police officer, were killed Monday when a gunman carrying a rifle opened ...