A police report said the footage seemed to show Coleman in a wall, before Richardson threw an article.
It was released on Monday after the incident.
Coleman did not want to participate in the investigation and “refused to be a victim,” reads the police officer report.
Richardson refused to talk to journalists waiting after their heat in Eugene, instead wishing them a “blessed day.”
After his judgment, he uses Track and Field said he was “aware of the reports” but “he would not be commenting on this matter.”
Coleman finished sixth in the 200m male final on Sunday, with the world champion Noah Lyles claiming first with a time of 19.63 seconds.
Melissa Jefferson-Wooden conducted a better personal staff of 21,84 seconds in the final of 200m female to complete a sprint double after securing 100 meters two days before.