Could the 27-year-old have been stopped before his rampage in Midtown Manhattan last week? Just-released video of key moments ...

Workers returned to 345 Park Ave., on Monday​ under the watchful eyes of NYPD officers and a surplus of security after the ...

Aland Etienne leaves behind two school-aged children, including a young son who celebrated his seventh birthday just days ...

The New York City office building that was the site of a mass shooting Monday had significant security measures in place.

The gunman who killed four people, including an NYPD officer, inside a Manhattan office building Monday evening left a note ...

Everytown for Gun Safety’s Nick Suplina joins ABC News’ Linsey Davis to unpack what the Manhattan shooting tells us about the ...

"He comes with a machine gun. He's not going to know who I am. He's going to shoot, no matter what," Sebije Nelovic said in a ...

Shane Tamura killed four people at a Manhattan office building Monday, including Blackstone executive Wesley Lepatner and New ...

The man who opened fire at a Midtown Manhattan office building last month, killing four people and injuring another before ...

The Las Vegas police released documents and records describing the mental health breakdowns that the man who killed four ...

New York City’s all-time record low shootings and gun violence milestone revealed this week is no accident. The NYPD and city ...

Could the 27-year-old have been stopped before his rampage in Midtown Manhattan last week? Just-released video of key moments ...