Police have identified the man who they say entered a Midtown Manhattan office building wearing body armor and opened fire, killing four people with a high-powered rifle, as Shane Devon Tamura.

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

Gunman Shane Tamura had a ‘documented mental health history’ and ‘sprayed’ the Manhattan office building lobby with a military-style assault rifle, police say