SIOUX CITY, Iowa (AP) — A federal judge has ordered separate trials for three Iowans charged with robbing drug dealers. One of the defendants, 22-year-old Jamal Dean, is currently serving a 25-year sentence for attempted murder in the shooting last year of a Sioux City police officer.

The Sioux City Journal reports that a judge on Friday granted the separate trials requests of Omaha, Neb., attorneys for Dean, 24-year-old Levon Dean Jr., and 33-year-old Sarah Berg. The three were to have been tried together on May 12.

All three are charged with the April 15, 2013, robbery of a drug dealer at a Sioux City motel room. The Dean brothers are also charged with a similar assault and robbery of a second drug dealer a little more than a week later.