The Latest on the case against officers charged in the death of Freddie Gray, a black man who was injured in police custody (all times local):

9:45 a.m.

Prosecutors have dropped the remaining charges against Baltimore police officers in the death of Freddie Gray, bringing an end to the case without a conviction.

Gray was a black man who was critically injured in the back of a police van in April 2015.

Prosecutors' decision Wednesday comes after a judge had already acquitted three of the six officers charged in the case, including the van driver and another officer who was the highest-ranking of the group.

A fourth officer had his case heard by a jury, who deadlocked and the judge declared a mistrial.

Prosecutors had said Gray was illegally arrested after he ran away from a bike patrol officer and the officers failed to buckle Gray into a seat belt or call a medic when he indicated he wanted to go to a hospital.

The death added fuel to the growing Black Lives Matter movement and caused turmoil in Baltimore, including large protests and the worst riots the city had seen in decades.

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3:15 a.m.

Pretrial motions are scheduled to begin for a Baltimore police officer facing criminal charges in the arrest and subsequent death of a young man black whose neck was broken in a police van.

Officer Garrett Miller faces assault, misconduct in office and reckless endangerment charges stemming from Freddie Gray's death in April 2015.

Prosecutors say Miller illegally arrested Gray after the young man ran away from a bike patrol officer and was criminally negligent for failing to buckle Gray into a seatbelt or call a medic when he indicated he wanted to go to a hospital.

Miller testified against his colleagues at previous trials and will be tried by two prosecutors new to the case. Six officers, three white and three black, were charged in Gray's death. So far, trials for four of the officers have led to three acquittals and a mistrial.