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

Shane Tamura speculated in a suicide note that he was suffering from CTE, a degenerative brain disease associated with sports ...

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

During evening rush hour in New York City on Monday, a man calmly walked into a Park Avenue office building lobby and killed ...

More than a decade before he turned a Midtown NYC office building into a killing ground, Shane Tamura stood out as a rising ...

New York City’s deadliest shooting in 25 years – in a state with some of the toughest gun laws in the nation – is raising ...

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

“CTE is linked to repetitive brain trauma and has a distinct pathology that can only be diagnosed at autopsy,” says Dr. Ross ...

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

CNN faces backlash after Erin Burnett described NYC shooter Shane Tamura as 'possibly white' in early reporting.