CHESTER, Ill. » Former suburban Chicago police officer Drew Peterson was given an additional 40 years in prison today for trying to hire someone to kill the prosecutor who put him behind bars for killing his third wife.

During his sentencing hearing in Randolph County Circuit Court, Peterson told Judge Richard Brown he never wanted Will County State’s Attorney James Glasgow killed and claimed to know all along a fellow inmate was recording their conversations. He added that at the time of the recordings, in November 2014, he was suicidal and didn’t believe he would live to see the scam come to fruition.

“I never did try to have you killed,” Peterson said toward Glasgow. “You can think what you want.”

After the hearing, Glasgow expressed skepticism about Peterson’s statement, calling him “deluded.”

Peterson’s fellow inmate, Antonio “Beast” Smith, wore a wiretap for prosecutors, and during the trial, jurors heard hours of Smith’s recorded conversations with Peterson at Menard Correctional Center. Smith also testified Peterson enlisted him to help kill Glasgow.

Peterson was convicted in the case in late May.

Glasgow said in court today that a lengthy sentence was necessary as a deterrent, otherwise convicts will believe they can kill a prosecutor and get the minimum sentence.

“It’s critical that a message be sent that this will never be (allowed) in Illinois,” he said.

The 62-year-old Peterson is serving a 38-year sentence for the murder of his third wife, Kathleen Savio. He is scheduled for parole in 2047, but today’s sentence must be served consecutively, making it likely Peterson will die in prison.

Savio’s death was initially deemed accidental. Glasgow reopened the case after the 2007 disappearance of Stacy Peterson, his 23-year-old fourth wife. Drew Peterson was never charged in her disappearance but told the informant he worried that Glasgow would eventually do so.