John Robinson, Sr. was convicted in January of 2003 of Capital Murder in the deaths of Izabel Lewicka and Suzette Trouten and of first degree murder in the case of Lisa Stasi.
Bodies of Lewicka and Trouten were found in barrels on property owned by Robinson in rural Linn County.
Stasi disappeared in 1985 and was never found in Johnson County.
Robinson also pleaded guilty to killing five women in Missouri. He received life without parole for each of those killings.
In 2006 he was also indicted for the murder of a Michigan woman.