An avid skateboarder who said "four to five unknown black males" mugged him in a parking lot actually smacked his head against a concrete wall, the Miami Herald reports. Rene Betancourt, 22, was found with a broken skull and hospitalized for two weeks in Miami while detectives searched for his assailants. In the end they found a parking lot surveillance video—of Betancourt knocking himself out cold while attempting a skateboarding move.

He lay there unconscious for a good five minutes. Eventually his parents found him and drove him to a hospital—where doctors removed a swelling, potentially fatal blood clot from his brain. “For the way that my son looked, it seemed like an assault,” his mother said. Betancourt was released this week but remains "cloudy" about the incident, she added.