Two years after a woman was stabbed and raped in the Great Smoky Mountains National Park, a man has pleaded guilty to the crimes.

William Earl Seevers, 48, pleaded guilty to one count of attempted murder and one count of aggravated sexual abuse by force in federal court on Monday. He will be sentenced on August 21.

A grand jury indicted him in December on two counts of aggravated sexual abuse, but the second count was dismissed as part of the agreement.

MORE: Plea agreement

He faces up to 20 years in prison for the attempted murder charge and up to life in prison for the aggravated sexual abuse charge. The plea agreement asks for a 27 year prison sentence and supervised parole for the rest of his life.

The court documents show on June 8, 2012, Seevers grabbed the victim from behind and put a knife to her throat while she was walking on the Gatlinburg trail. When the victim tried to get away, he hit her, choked her and stabbed her with a knife.

The court documents said she felt like Seevers was going to kill her. He also tied her up with rope and raped her. Seevers told the victim "he picked her because she was pretty and he had been watching her for a few days."

The court documents said Seevers stabbed her again before he left. The victim crawled to the road and waved down a passerby.

The defendant later admitted he was high on a combination of cocaine and heroin and said, while he doesn't remember everything, he "believes he has committed the crimes."

MORE: Smokies stabbing suspect already in prison when indicted

Seevers has been in prison since a few days after the incident occurred on unrelated charges. He pleaded guilty and was sentenced to five years for driving a stolen truck.

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