The man who stormed a Midtown Manhattan skyscraper paid his boss $1,400 (£1,100) for the semi-automatic rifle, police say.

Dramatic photos shared online show the blood-stained assault rifle gunman Shane Tamura used to open fire inside a Midtown Manhattan skyscraper , killing an officer and four others.

Police identified the gunman as Shane Tamura, of Las Vegas, and said he killed himself.