Derek Chauvin Seeks New Trial In George Floyd Murder Case.😲 Former Minneapolis police officer Derek Chauvin who was convicted last month of murdering George Floyd filed court documents for a new trial on Tuesday. His attorney, Eric Nelson, petitioned the court, alleging that Chauvin's constitutional rights were violated when Judge Peter Cahill refused to change the venue of the trial, and that the pretrial publicity deprived the officer of a fair trial. Nelson also cites "prosecutorial and jury misconduct; errors of law at trial; and a verdict that is contrary to law.