The Piotrkow Child Killer: Mariusz Trynkiewicz

Overview

Mariusz Trynkiewicz (born 10 April 1962 in Piotrkow Trybunalski, died 9 January 2025) was a Polish former schoolteacher who, in the summer of 1988, sexually assaulted and murdered four boys aged between 11 and 13 in the central Polish city of Piotrkow Trybunalski. The case shocked Poland and became one of the most notorious crimes of the country's late communist era. Trynkiewicz was arrested in August 1988, tried, and sentenced to death in 1989. His sentence was commuted under an amnesty enacted during Poland's political transition, and his eventual release in 2014 prompted new national legislation on the detention of dangerous offenders.

Background

Trynkiewicz was born and raised in Piotrkow Trybunalski. In the 1980s he worked as a teacher, employed at a local primary school where he supervised extracurricular activities such as photography and shooting clubs. His position gave him contact with and the trust of local children. Reporting on his exact teaching subject varies between sources, with some describing him as a teacher of technical education and others as a physical education teacher.

The crimes took place in 1988, a period of significant social and political instability in Poland in the final years of communist rule. Trynkiewicz was in his mid-twenties at the time of the murders.

The Murders

Over the course of July 1988, Trynkiewicz lured four boys to his apartment, individually or in small groups, using pretexts such as showing them collectibles or offering help. Once there, he sexually assaulted and killed them. The victims were identified as Wojciech Pryczek, Tomasz Lojek, Artur Krawczynski, and Krzysztof Kaczmarek, all aged between 11 and 13.

After the killings, Trynkiewicz transported the boys' bodies to a wooded area outside the city and set them on fire in an attempt to destroy evidence. The remains were discovered by a person foraging in the forest. The disappearance of multiple children in a short span and the discovery of the burned bodies caused widespread alarm in Piotrkow Trybunalski.

Arrest, Trial and Sentence

Trynkiewicz was arrested in early August 1988, shortly after the discovery of the victims' remains. The investigation linked him to the missing boys, and he was charged with the four murders.

On 29 September 1989 a court convicted Trynkiewicz and sentenced him to death, with a separate capital sentence recorded for each of the four killings. The verdict reflected the gravity of the crimes and the public outrage they generated. At the time, the death penalty remained on the books in Poland, though executions were becoming increasingly rare amid the country's broader political changes.

Commutation and 2014 Release

Following an amnesty enacted by the Polish Sejm in December 1989, during the post-communist transition, Trynkiewicz's death sentence was commuted to 25 years of imprisonment. Poland would later formally abolish the death penalty.

After serving the full term of his commuted sentence, Trynkiewicz was due for release in 2014. He was released from prison on 11 February 2014. His impending freedom had generated intense national debate, with psychiatric assessments reportedly concluding that he remained a danger to the public. On 3 March 2014, a court ordered that he be placed in a closed psychiatric facility in Gostynin under newly available preventive-detention measures.

Legacy and Later Years

The Trynkiewicz case was a direct catalyst for Polish legislation on the post-sentence supervision and isolation of dangerous offenders. A law passed in late 2013, which took effect in early 2014, authorized indefinite preventive detention in a specialized facility for individuals deemed to pose a serious ongoing threat. The statute was widely associated with Trynkiewicz's scheduled release and the public anxiety surrounding it.

Trynkiewicz remained in detention for the rest of his life. He was additionally convicted in 2015 and again in 2021 on charges related to the possession of child pornography. He died on 9 January 2025 at the age of 62. The case remains a reference point in Polish discussions of capital punishment, criminal justice reform, and the management of high-risk offenders.