The evidence documents Tamura's years-long struggle with mental health before he opened fire in a Midtown office building.

The man who opened fire at a Midtown Manhattan office building last month, killing four people and injuring another before fatally turning the gun on himself, had a history of run-ins with police in his hometown of Las Vegas,

The Las Vegas Metropolitan Police Department has released body-worn camera footage and 911 recordings showing multiple encounters with Shane Tamura, the man who police said killed four people before taking his own life at a Manhattan office building in July.