A Queensland assistant police commissioner is being interviewed after killing a man in what is understood to be an accidental collision in a Cairns car park on Monday morning.

Northern Region Assistant Commissioner Paul Taylor is believed to have been arriving at work at the Cairns police station in Sheridan Street just before 4.30am on Monday when the collision occurred.

Queensland Police Northern Region Assistant Commissioner Paul Taylor was at the wheel of a car that ran over a man outside the Cairns police station. Credit:Queensland Police Service

He reportedly ran over a man believed to be lying in the station driveway.

It is believed that, in the dark, Mr Taylor was unaware he had hit the man, until he became trapped under his car.