WAUKEGAN (CBS)– A Lake County judge found the north suburban man who beat his girlfriend’s mother to death in 2010 with a baseball bat guilty of murder on Monday.

Judge Daniel Shanes did not find that Daniel Baker, 24, of Deerfield was legally insane when Marina Aksman was bludgeoned to death in her Vernon Hills home. Instead, Shanes found Baker guilty, but mentally ill, the Lake County News-Sun is reporting.

“This court finds the defendant was simply acting in a blind rage, not insanity,” Shanes said. “This court finds the defendant clearly has his share of mental challenges … but that alone does not find him insane.”

Defense attorneys Ed Genson and Blaire Dalton unsuccessfully sought a verdict of not guilty by reason of insanity in the bench trial. Baker waived his right to a jury when the trial started October 16th.

“Insanity means (a defendant) is so mentally ill, he could not understand wrong,” Assistant State’s Attorney Ari Fisz said. “Guilty, but mentally ill, means he had a substantial (mental) disorder that impaired his judgment that day (of the murder) but didn’t rise to the level of insanity.”

Guilty, but mentally ill, means Baker faces 20 years to life in prison, Shanes said. Illinois Department of Corrections can work to treat Baker for his mental issues, the judge noted.

Baker was diagnosed with a plethora of mental issues, according to two psychiatrists who testified during the trial. Although Dr. Stafford Henry, who testified for the state, and Dr. Alexander Obolsky, who testified for the defense, disagreed on the severity of Baker’s disorders, both said he had more than one. Diagnoses included borderline personality disorder (or traits of the disorder), obsessive-complusive disorder and Tourette syndrome.

Baker was dating Aksman’s developmentally disabled daughter, Kristina, for several months. Baker had reportedly brought Kristina home after curfew more than once, and they also took a trip together that ended with Kristina’s hospitalization.

On March 31, 2010, Aksman left Baker a voice message in which she called him “bipolar” and forbade him from having further contact with her daughter.

“This message triggered a homicidal rage in Mr. Baker,” Shanes said.

Not long after listening to that message, in the early hours of April 1, 2010, Baker grabbed an aluminum baseball bat “for protection” and drove to Aksman’s home. He crashed his car into the front step of their house, smashed a window in the rear of the home and hit Marina with the baseball bat at least 10 times, according to court testimony.

“It is apparent that she suffered from a repeated and prolonged beating. What the defendant did was vicious and barbaric,” Shanes said.

Baker fled the state with Kristina following the murder, staying near the Canadian border. He was apprehended in Montana for speeding and fleeing from police. He gave Waukegan Police Lt. Charles Schletz, a member of the Lake County Major Crime Task Force, a confession during a five-hour interrogation, which was part of the evidence presented at trial.

Genson had unsuccessfully sought to suppress the recording on the grounds that Baker was “of unsound mind” during the questioning. Genson said Monday that statement was what “made the whole case.”

Genson said he thought there are grounds for an appeal. He will be filing post-trial motions to be heard in Lake County dealing with the video, Baker’s mental fitness to stand trial and the insanity plea.

“I think we have a very fine judge here. I find it difficult to disagree, (but) I think the evidence shows (Baker) was insane,” Genson said.

He also said Baker exhibited “bizarre” behavior during the trial.

“He was the most difficult client I’ve ever had. I do believe he needs medication. He found it difficult to cooperate,” Genson said.

Fisz said the state will seek a life sentence for Baker. No sentencing hearing date was scheduled.

A hearing on defense post-trial motions was set for November 26th.

Neither the Aksman family nor Baker’s family spoke following the verdict.

(Source: Sun-Times Media Wire © Chicago Sun-Times 2012. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.)

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