A former Arizona police officer has been acquitted of murder after he shot and killed an unarmed man outside his hotel room.

Philip Mitchell Brailsford, 27, shot Daniel Shaver in 2016 when he was responding to call that someone there was pointing a gun out of a window.

The shooting occurred in the Phoenix suburb of Mesa after officers ordered Mr Shaver to exit his hotel room, lay face-down in a hallway and refrain from making sudden movements.

Mr Shaver, a 26-year-old father-of-two, sobbed as he begged police not to shoot and was ordered to crawl toward officers.

Video of the shooting, which Shaver's family has referred to as an "execution", has finally been released.

It shows a sobbing Mr Shaver lying on the floor and crawling towards the police officer. He can be heard begging "please don't kill me" at the officers.