C-suites were already on edge after an insurance executive was assassinated last year, and now have to grapple with panicked employees and security overhauls.

Office workers told Newsday they were unnerved by the shooting but still feel safe, if less than surprised by the violent outburst.

When I look into you and dad’s eyes, all I see is disappointment,” Tamura wrote to his mother in the note. “I love you, Momma ...

New York City police detectives searched a studio apartment in Las Vegas that belonged to the suspected gunman in Monday's ...

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

The cleaner on the 33rd floor of 345 Park Ave. made a left turn down a corridor just as gunman Shane Tamura turned the ...

The gunman who killed four people at an office building in New York City on Monday evening left his home in Las Vegas, Nevada ...

Mayor Eric Adams told MSNBC the gunman referenced CTE, a disease linked to head trauma, in a note before killing four people ...

The mass shooting at a Manhattan office building raises new concerns for business leaders looking to secure their staff and buildings from threats.

Misunderstood, wandering arachnids are often just in search of love.

Four people died after a gunman opened fire in a Manhattan office building, and security footage showed the shooter calmly ...