NEW: You can now listen to Fox News! A Kentucky man admitted to killing his grandmother in a brutal attack. He entered a guilty plea but was mentally ill. His office will seek a maximum sentence of life imprisonment. NEW VIDEO SHOWING BIZARRE BEHAVIOR: OHIO TEEN WHO INTENTIONALLY KIDNAPPED BOYFRIEND’S ‘SHOCKING REMORSE”Police found Oliver unconscious and in a pool blood. According to the report, she died of blunt force trauma to her head. Testerman’s mom told investigators that she witnessed the attack and attempted to stop him. Another witness told police Testerman had accused Oliver of being a “terrorist” and “suicidal”. He warned her to remain seated or suffer the consequences. Former Prosecutors: “KENTUCKY’S EX-SHERIFF’S ‘FRIVOLOUS,’ INSANITY CLAIM WILL NOT FLY IN JUDGE’S SUSPECTED MURDERS: He said, “I’ve been abusing acids for quite a while.” “I killed my grandmother without reason on that day, hitting her multiple times.” “Testerman was expected to pursue an ‘insanity’ defense when his trial began on May 12 but a defense specialist later determined that he suffers with antisocial personality disorder,” his attorney said.