Protesters on May 2, 2015 in the Sandtown neighborhood where Freddie Gray was arrested. (Photo by Andrew Burton/Getty Images)

This post has been updated with comments from Baltimore State’s Attorney Marilyn Mosby.

A hearing for Officer Garrett Miller for charges involving the arrest and death of Freddie Gray was supposed to begin today. Instead, Chief Deputy State’s Attorney Michael Schatzow told a Baltimore judge that the state is dropping all charges against Miller and the two other officers who were charged in the case, the Baltimore Sun reports.

The state dropped all charges against Officer William Porter, whose trial ended with a hung jury and was slated to be retried next month, and Officer Alicia White, who was scheduled to be tried in October.

Judge Barry G. Williams, who acquitted three other officers in the case, was expected to preside over the remaining trials. Williams said that he acquitted officers Edward Nero, Caesar Goodson, and Brian Rice because prosecutors presented “little or no evidence to support their broader theory in the case—that the officers acted unreasonably, and willfully disregarded their training and general orders, when they decided not to secure Gray in a seat belt, and that the decision directly led to his death,” according to the Baltimore Sun. Attorneys for the officers said that Gray’s death “was the result of a tragic accident.”

Milller’s hearing was expected to be especially contentious because he testified in the trial of Officer Nero. Prosecutors would have had to ensure that nothing that he said on the witness stand at that time would be used against him in his own case. He was charged with assault, reckless endangerment, and two counts of misconduct in office.

The 25-year-old Gray suffered a fatal spine injury after he was taken into police custody last April. He died a week later. Gray’s death sparked a week of peaceful protests in Baltimore, followed by riots that resulted in Governor Larry Hogan declaring a state of emergency and calling in the National Guard.

At a press conference this morning, Baltimore State’s Attorney Marilyn Mosby said that while she was extremely proud of her team, she decided to drop the charges because of a “dismal likelihood of conviction” for the remaining officers.

Mosby said that the proceedings had holes in them from the very start, beginning with not having an investigation independent of Baltimore police. “Police investigating police, whether friends or colleagues is problematic,” she said, adding that there was reluctance and obvious bias by individual police officers during the investigation. In addition, she said, the accused officers should not have been given the right to choose between having judge or jury trials.

“We do not agree that Freddie Gray killed himself,” Mosby said. “We stand by the medical examiner’s determination that this death was a homicide.”

She ended her statement by pointing out new department procedures such as police body-worn cameras, video cameras in police vans, and a mandate for officers to call medics when they are requested by suspects. She hope that these things will ensure “that what happened to Freddie Gray will never happen” to another Baltimore resident.

Meanwhile, Mayor Stephanie Rawlings-Blake, who has made previous statements regarding the verdicts, has yet to comment on this decision. Both Mosby and Rawlings are in Philadelphia for the Democratic National Convention.