The Murder of Milla Aronen

Editorial note: Aronen's body has not been recovered. This account distinguishes the District Court's initial ruling from the later, final murder conviction and relies on reported court findings rather than speculation about how her remains were disposed of.

Disappearance during military service

Milla Aronen was 21 and completing military service when she disappeared in June 2019 while on leave in Somero, southwest Finland.

During the investigation, her former boyfriend Jyri Nieminen admitted that he had been with Aronen and had caused her death, but he disputed that he had intentionally killed her. He also admitted disposing of her body. Despite extensive searches, her remains have not been found.

District Court rejected the murder charge

In June 2020, Southwest Finland District Court found that there was reasonable doubt over whether the death had been intentionally caused. It rejected the murder charge and instead convicted Nieminen of aggravated assault and aggravated negligent homicide, as well as offences connected to fraud and the treatment of Aronen's body.

The court imposed a prison sentence of two years and eight months. Prosecutors and Aronen's relatives appealed, arguing that the evidence supported an intentional, premeditated killing.

Court of Appeal found murder for financial gain

On 7 July 2021, Turku Court of Appeal overturned the central part of the lower court judgment and convicted Nieminen of murder. The appellate court found that the killing had been planned for financial gain and was aggravated when assessed as a whole.

According to the appeal court findings reported by Yle, Nieminen had serious financial problems and lured Aronen to a remote forest area. After her death, he obtained her phone, online-banking credentials and bank card and submitted loan applications in her name totaling at least 57,400 euros. He attempted to withdraw money from one approved loan the following morning.

Life sentence became final

The Court of Appeal sentenced Nieminen to life imprisonment. He sought permission to challenge that judgment in Finland's Supreme Court.

On 29 September 2021, the Supreme Court refused leave to appeal, leaving the murder conviction and life sentence in force. The case is therefore classified as adjudicated and final, although the location of Aronen's remains remains unknown.