Transcript for Owner says ex-officer, victim both worked at nightclub
As this plays outs we are learning more about the officer charged. 18 complaints in his 19 years on the force. Did he and George Floyd know each other amid news the two might have worked security at the same nightclub. Marcus Moore on that part of the story tonight from Minneapolis. Reporter: Tonight, the arrest of fired officer Derek chauvin for the murder of George Floyd, as we learn chilling new details about their past. You don't have to sit there with your knee on his neck. Reporter: Chauvin, seen here with his knee on Floyd's neck, worked security at the same Minneapolis nightclub where Floyd worked security, according to the owner who described to me chauvin's time at the club. He was kind of mellow. I did enjoy working with him at times, but at times I did have to kind of reign him in a little bit. Like what? Like just right away pulling out the pepper stray and spraying the whole crowd that, to me, was nothing. Reporter: ABC news obtaining police records that show chauvin faced 18 complaints in his 19-year career with Minneapolis police, and was disciplined for two of them, though it's not clear what the complaints were for. Officer tou Thao, who has also been fired, had six complaints, one of them which remains open. He was not disciplined for the other five. The other two officers fired have no complaints on file. All of them are supposed to pay! If you're my brother, you see me doing wrong, you're supposed to stop me. If you don't stop me, you're just as guilty as him. Reporter: Overnight, the state releasing a transcript of the 911 call from the incident, showing officers responded to a call of a man using fake bills to purchase cigarettes, adding the man was drunk and not in control of himself. The police report confirming officers responded to a 911 call reporting a forgery in progress, not a violent crime. How that call led to this -- I can't. Y'all are going to kill me. Reporter: Is central to the investigation. But the city's mayor saying the use of that type of neck restraint was wrong. Pressing the knee into an individual's neck is not an authorized technique. It is nothing that officers are trained in on. It stands against everything that myself and chief Arredondo have been pushing for. Reporter: ABC news finding that the use of neck restraints and choke holds are listed in the police department's policy and procedure manual, and may be used against a subject who is actively resisting. Police at the scene say Floyd physically resisted. Still, investigators tonight want to know why chauvin's knee was on Floyd's neck even after he was handcuffed. Marcus Moore also in Minneapolis for us. I know that club owner also shared her thoughts with you on the type of man she believed George Floyd was. Reporter: David, she told me he was sweet as pie and she was devastated by his death and also heartbroken because the building where her business was is destroyed. You may be able to see it off in the distance smoldering as they prepare for another night.
This transcript has been automatically generated and may not be 100% accurate.