A Kenosha, Wisconsin, man convinced of murdering his ex-wife was sentenced to 90 years in prison Monday by a Lake County judge.

David Brocksom, 47, was found guilty last year of sneaking into the home of his ex-wife, Beata Brocksom, in September 2015 with the intention of killing her and making it look like a suicide, according to the Lake County state’s attorney’s office.

Beata Brocksom woke up, however, and fought with her ex-husband, leading him to shoot her in the throat during a struggle, prosecutors said. Though mortally wounded, she managed to escape through a window, but her body was found in bushes on the property hours later.

Brocksom, who has remained in custody at the Lake County Jail, sought to get his conviction overturned, but was denied a new trial in July by Judge George Strickland, prosecutors said.

“This has been a long, difficult process for everyone involved,” Lake County State’s Attorney Michael Nerheim said. “Hopefully, this prison sentence helps bring some closure to the family of Beata Brocksom.”

Brocksom does not have the possibility of supervised release because of a mandate stating that he must serve 100% of his sentence before he becomes eligible, prosecutors said.