An Oklahoma judge on Friday sentenced a man to death for beheading a co-worker in 2014 at a food processing plant.

Cleveland County District Judge Lori Walkley accepted a jury's recommendation of the death penalty over life in prison without parole for Alton Nolen, 33.

Jurors earlier this year convicted him of decapitating 54-year-old Colleen Hufford when he attacked her and others at the Vaughan Foods plant.

Alton Nolen is escorted from a courtroom following his formal sentencing in Norman, Oklahoma. Nolen was sentenced to death for beheading Colleen Hufford, as well assaulting several other coworkers in 2014

Colleen Hufford (left) was the victim in the Moore, Oklahoma beheading case that took place at Vaughan Foods food processing plant

Kelli Beranek, the daughter of murder victim Colleen Hufford, talks with the media following the sentencing of Alton Nolen in Norman, Oklahoma

Nolen had just been suspended from his job at the Vaughan Foods plant when he walked inside the company's administrative office and attacked his co-workers.

During the trial, prosecutors played recordings of Nolen confessing to the stabbings while he was hospitalized following the attack.

In the recordings, Nolen says he doesn't 'regret it at all' and that 'oppressors don't need to be here.'

Investigators said Nolen had just been suspended from his job at the Vaughan Foods plant when he walked inside the company's administrative office and attacked his co-workers.

His attorneys argued that he is mentally ill and that he believed he was doing the right thing because of his delusional misinterpretations of the Quran.

Traci Johnson, one of the co-workers attacked by Alton Nolen, talks with the media following his formal sentencing in Norman, Oklahoma

Investigators said Nolen had just been suspended from his job at the plant when he walked inside the company's administrative office and attacked Hufford (right) and another co-worker

But prosecutors said Nolen knew right from wrong before he attacked Hufford.

Nolen had repeatedly tried to plead guilty and asked to be executed, but Walkley declined to accept his plea.

'This was a decisive act not driven by a mental illness. I submit to you, he would do it again in a heartbeat,' Cleveland County Assistant District Attorney, Susan Caswell, said in the shocking court statement.

One of Nolen's attorneys had questioned whether his client was mentally competent to enter a guilty plea.

Cleveland County Assistant District Attorney, Susan Caswell, said in a court statement: 'This was a decisive act not driven by a mental illness. I submit to you, he would do it again in a heartbeat'

Nolen had repeatedly tried to plead guilty and asked to be executed, but Cleveland County District Judge Lori Walkley declined to accept his plea.

One of Nolen's attorneys had questioned whether his client was mentally competent to enter a guilty plea.

At a 2016 hearing, Nolen told the judge that he would only accept a death sentence, not life in prison with or without the possibility of parole.

The judge repeatedly reminded Nolen that if he pleaded guilty and waived his right to a jury trial, the decision to sentence him would be up to a judge, not him.