(CHICAGO) -- Former Illinois cop and convicted killer Drew Peterson was sentenced Friday to an additional 40 years in prison, on top of the 38 year sentence he is currently serving for the murder of his wife.
In May, a jury in Randolph County, Illinois, found Peterson guilty of trying order a hit on a State's Attorney who helped convict the ex-cop in 2012, ABC's Chicago station WLS-TV reported.
Back then, Peterson was found guilty of murdering his third wife, Kathleen Savio.
Savio's body was found in 2004 in a bathtub, and her death was originally ruled an accident.
Later, when Peterson's fourth wife went missing in 2007, police reexamined Savio's death and ruled it a homicide.
The trial -- which received widespread national attention -- was controversial for its dependence on hearsay evidence, ABC News reported at the time.
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