A video provided by Phoenix police shows the operator of a speed-camera van quietly doing paperwork before he was fatally shot by a passer-by who pulled slowly alongside him.

The minute-long video obtained by The Associated Press on Wednesday was taken from from the interior of the van.

It shows 51-year-old Doug Georgianni sitting in the van's front seat with an overhead light on as he shuffles through papers on April 19, 2009.

Georgianni is then knocked to the right by the power of multiple gunshots and can be heard mumbling shortly after.

A second video also provided by Phoenix police shows a Chevy Suburban slowly pull up behind the van and then alongside it. The shooter wasn't caught on tape.

Thomas Patrick Destories is charged with first-degree murder in the killing. His lawyer didn't immediately return a call for comment.