Tishko Ahmed denied the charges throughout the trial, but a unanimous district court on Monday found him guilty of murdering Wilma Andersson in Uddevalla in November 2019.
Her head was found in their home. Police are still searching for the rest of her remains.
Neighbours told the court they had heard screams, and police found extensive traces of blood and muscle tissue in the apartment that the prosecutor argued linked the perpetrator to the crime.
The court said it found “no mitigating circumstances, but a number of aggravating circumstances”.
It said Ahmed had subjected the girl to “extensive violence even when she was in a low position against the floor” and that she would likely have feared for her life and “suffered significantly”.
It also said he had “treated the body with disgrace” after the murder, which had caused “continued suffering for the girlfriend’s family”, for which he was also found guilty of crime against the peace of the grave. The court ordered him to pay 60,000 kronor in damages each to her parents and sister.
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“I note that the court shares our view and he was judged to be guilty when the trial ended. He is now sentenced to the most severe punishment in law,” commented prosecutor Jim Westerberg.
“The investigation only took six months which is quite fast when it comes to murder on this scale. We are pleased that the National Forensic Centre prioritised this case and worked hard to get test results that were necessary. The police also did a very good job,” added Westerberg.
A psychiatric evaluation found that Ahmed did not have a serious mental disorder at the time of the crime that could have seen him sent to psychiatric care for offenders, and it was therefore possible to sentence him to jail. However, it did said it had found indications that he had narcissistic tendencies.
Ahmed’s lawyer did not immediately comment, but he has previously said that he would appeal a guilty verdict to the appeals court.