Derek Chauvin, the former Minneapolis police officer convicted of killing George Floyd, is now defending himself in a separate case involving a teenager who was allegedly subjected to a similar act of excessive police force in 2017. Chauvin appeared in front of a judge via videoconference on Thursday and pleaded not guilty to the charges related to the 2017 incident, the Associated Press reports

The former officer, who is accusing the teenager of resisting arrest, spoke from a maximum-security prison as he defended himself against the allegations. Here are four things to know about the case involving the teen: