Messrs. Burley and Matthews were the two men who pleaded guilty after a member of the task force, Sgt. Wayne Jenkins, planted drugs in Mr. Burley's car after a high-speed chase that resulted in the death of an 87-year-old man, police and prosecutors say. Mr. Burley spent seven years in prison before he was released in August, and Mr. Matthews was incarcerated for nearly four. More exonerations may well be on the way — federal public defenders are seeking to overturn the conviction of Levar Mullen, a Safe Streets worker who accepted a plea deal on a handgun charge after task force officers arrested him in 2014. He said at the time that the officers lied about the justification for stopping and searching him, and that claim must be given new weight after the revelations about the task force members' own illegal acts. City prosecutors have taken steps to drop charges or release 175 people as a result of the task force's corruption, and the Maryland public defender's office says more than 2,000 cases are "irreparably tainted."