An Oklahoma man accused of shooting to death his estranged wife before turning the gun on himself has pleaded guilty to first degree murder in the case.

Lanne Emet Baldwin, 25, pleaded guilty Tuesday to one count of first degree murder in the shooting of Cassandra Baldwin at her Dewey County home. In exchange for his guilty plea, Judge Rick Bozarth sentenced Baldwin to life in prison, with all but 25 years suspended. 

The case against Baldwin began with a 9-1-1 call in the early morning hours of January 6. At approximately 4:00 a.m., the Dewey County Sheriff's Office received a 9-1-1 call from a number identified as "Cassie Baldwin." Dispatchers heard a woman screaming and phone buttons being pressed before the call disconnected.

Approximately 45 minutes later, authorities received another call, this one from Lanne Baldwin's mother. She told dispatchers that two people--her son and his wife--had been shot at a property in Taloga.

Baldwin's mother called again about 10 minutes after that, saying her son had called her back and he needed an ambulance.

When law enforcement arrived at the Taloga home, they found Lanne Baldwin lying just inside the back door of the home with a gunshot wound to the face. They found Cassandra Baldwin lying dead of a gunshot wound in another area of the home.

Lanne Baldwin was transported to Clinton Regional Hospital, where he was found to have amphetamines, benzodiazepines, propoxyphene, methamphetamine, and cannabinoids in his system, as well has having a blood alcohol concentration of "<10." He was soon transported to OU Trauma Center in Oklahoma City. 

On January 10, four days after the shooting, Baldwin was arrested and charged with first degree murder. 

The maximum penalty for first degree murder is death; however, the death penalty may only be given under certain aggravating circumstances. In general, first degree murder is punishable by life in prison or life without parole. 

First degree murder is an 85 Percent Crime, which means that those who are sentenced to life with the possibility of parole must serve 85 percent of the sentence before achieving parole eligibility. For the purpose of parole, a life sentence is calculated at 45 years, which means a person may be eligible for parole after 38 years and 3 months. 

Because much of Baldwin's sentence is suspended, he will likely serve less than 25 years in prison for killing his estranged wife.