[1] The investigation into the death of Arto Malinen also brought to light the murder of the 29-year-old programmer Kari Pekka Anttonen, who had disappeared over a year earlier.
The 16-year-old boy was sleeping in a walk-in wardrobe, but at some point he went to see what was happening in the room and also saw the body.
The rest of the dismembered body was packed into cardboard boxes and put on the balcony because they had begun to smell.
Butt and Hyvönen originally wanted the boxes to be taken farther away to Nokia, but the driver did not agree to this.
Hyvönen had finally put Anttonen's head in a pot to fry and watched how the expression on his face became distorted.
On the street, they were joined by a young man who wanted to buy drugs, and Butt suggested moving to Malinen's apartment.
The argument ended with Butt stabbing Malinen ten times in the back with a kitchen knife.
[2] After the investigation began, Anttonen's body was searched for in Nokia's Koukkujärvi landfill, but was not found.
Butt claimed that the anabolic steroids she had taken during the 1990s had affected her hormonal balance, thus resulting in violent behavior.
[5] The court ordered Hyvönen and Butt to pay over 100,000 euros in compensation to the families of the victims,[4] and both were sentenced to life in prison.
[5] The Helsinki Court of Appeal accepted Butt's parole request in August 2017 and set her release date in late 2018, when she has been in prison for about 15.5 years.
However, the Court of Appeal considered that, among other things, Butt's close relationship with her family and having an apartment make it easier to return to civilian life.