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

A man who killed four people at a Manhattan office building bought the rifle he used in the attack and the car he drove ...

The youngest victim of Monday’s shooting rampage in a Midtown skyscraper was a rising star — who was executed while working ...

The gunman is believed to have acted alone and investigators have yet to determine a possible motive. Read more at ...

The attack on a seemingly secure building has rattled workers and prompted managers to examine whether they are adequately ...