The police report was the latest instance in which video evidence offered a starkly different account of police violence than what officers had reported themselves.
It was not immediately clear what role the officer, Preston Hemphill, had played in the incident that led to murder charges against five fellow officers fired from the police force.
A Times analysis found that officers gave dozens of contradictory and unachievable orders to Mr. Nichols. The punishment was severe — and eventually fatal.