China Arnold was accused of killing her 3-week-old daughter in a microwave oven in Dayton, Ohio, on Aug. 30, 2005. Investigators said the baby, Paris Talley, was burned to death in the oven after Arnold and her boyfriend had an argument over who the child's biological father was. Arnold was sentenced to life in prison without parole Sept. 8, 2008. Judge Mary Wiseman told Arnold during the trial, "No adjectives exist to adequately describe this heinous atrocity. This act is shocking and utterly abhorrent for a civilized society."
Michelle Kehoe, 36, was sentenced to life in prison without the possibility of parole on charges of first-degree murder in the death of her 2-year-old son Seth, and an attempted-murder charge related to her 7-year-old son, Sean.
Kehoe and her sons were reported missing by her husband, Eugene Kehoe, after the boys and their mother reportedly left to go visit relatives in Sumner, Iowa, on Oct. 26, 2008. The next morning, Kehoe walked into the home of residents in Littleton, Iowa, and told them that her sons were in danger.
Seth was found dead outside the family's van. Autopsy results revealed the boy had died from severe cuts to his neck. His older brother, Sean, was found struggling for his life inside the vehicle and had suffered similar cuts.
According to the arrest warrant affidavit, Kehoe falsely claimed that her children had been abducted. "She stated that she couldn't explain why she had done it. She stated that she couldn't face anyone. She stated that she wanted to die or be locked up where she couldn't hurt anyone else," the affidivit read.
At the trial in October 2009, Kehoe pleaded not guilty. Her attorneys argued that she suffered from extreme mental illness. An Iowa jury heard a tape of her surviving son telling police how his mother covered his eyes, nose and mouth with duct tape, slashed his throat, and then did the same to his younger brother. On Nov. 5, 2009, she was found guilty of first-degree murder, attempted murder and child endangerment causing serious injury. The following month she was sentenced to life in prison and an additional 25 years.
The Associated Press contributed to this report.