This undated photo provided by the Dallas County Sheriff's Office shows Bryan Riser. A judge on Wednesday, ordered the release of Riser, a former Dallas police officer who was arrested on capital murder charges for allegedly ordering two killings in 2017 after prosecutors agreed that they don't have enough evidence to move forward with the case. Dallas County Sheriff's Office/AP hide caption
A photo provided by the Dallas County Sheriff's Office shows Bryan Riser. Authorities say Riser, a Dallas police officer, has been arrested on two counts of capital murder, more than a year and a half after a man told investigators that he kidnapped and killed two people at the officer's instruction in 2017. AP hide caption
Former Dallas police officer Amber Guyger has been indicted on a murder charge in the killing of her black unarmed neighbor in his own apartment. AP hide caption
The Dallas Police Department says Officer Amber Guyger's employment has been terminated. Kaufman County Sheriff's Office/AP hide caption
Dallas Police Chief David Brown briefs the media about a shooting at Dallas Police headquarters on June 15, 2015. Tony Gutierrez/AP hide caption
Police keep watch during a protest Friday in Dallas. Ron Jenkins/AP hide caption