A trove of new documents and 911 calls give insight into Shane Tamura's mental health before he shot and killed four people ...

A state background check was incomplete when a Las Vegas man bought the rifle he would then use to commit a mass shooting in ...

Police have identified the man who they say entered a Midtown Manhattan office building wearing body armor and opened fire, ...

Tamura had apparently driven across the country from Nevada before killing four people in a shooting rampage in Manhattan.

New York Police Department Commissioner Jessica Tisch detailed the minute-by-minute timeline of Shane Tamura's movements and ...

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

A Nevada man recently traveled to New York City, entered a Manhattan building wearing body armor, carrying an M4 rifle, and ...

A Nevada man with a "documented mental health history" is accused of walking into a Manhattan building and opening fire ...

Detectives found prescription medication for depression and epilepsy in the Las Vegas home of Midtown mass shooter Shane ...

No ruling has been made yet on whether Tamura was suffering from the disease chronic traumatic encephalopathy (CTE), which he ...

Four people were killed and one critically injured when a man opened fire inside a Manhattan office building on Monday ...

The 27-year-old Nevada man opened fire at a New York City office building, killing at least four people and then himself.