The Brief Rafael Jones’ conviction for killing Philadelphia Police Officer Moses Walker has been overturned. A judge has overturned the murder conviction of Rafael Jones, who was serving a life sentence for the 2012 killing of Philadelphia Police Officer Moses Walker, according to the president of the Philadelphia Fraternal Order of Police Lodge 5. Judge overturns conviction in high-profile police killingWhat we know:The sentence was handed down in 2015 following the deadly shooting in 2012. Philadelphia Police Officer Moses WalkerOfficer Walker in his civilian clothes is seen in surveillance video after leaving work at the 22nd District. The backstory:The case dates back to 2012, when Officer Walker was shot and killed during a robbery attempt after leaving work at the 22nd District.