TOPEKA, Kan. (AP) — A lawyer indicted six years ago on charges that he bilked the Kansas City, Kansas, Board of Public Utilities out of $400,000 has won another legal battle.

The Kansas City Star reports that the Kansas Supreme Court ruled Friday to throw out charges against 74-year-old Rodney L. Turner.

In the ruling, the high court affirmed a 2009 lower court decision that found the case was tainted by a detective’s inappropriate testimony to the grand jury that indicted Turner. Court documents show the detective suggested Turner and former BPU chief administrative officer Marc Conklin were connected to an unsolved 1987 killing.

Conklin also was indicted in the BPU case. He committed suicide in 2009.

The decision also raised questions about the strength of the evidence used to support Turner’s indictment.