Dariusz Kotwica

In April 2015, he mercilessly stabbed to death 79-year-old Swedish pensioner Bo Georg Ehrlander in the man's kitchen using a knife. Ehrlander was later found lying on the floor of his Saltholmen home. His car keys were also found to be missing.

Prior to his murders, Kotwica seriously injured an unknown person in the Netherlands in 2011, attempted to murder a shopkeeper in Salzburg in 2012 after failing to shoplift, and robbed a grocery in Germany in January 2015.

Kotwica grew up in Metalchemie, a housing estate on the outskirts of Opole. Although described as an average, normal guy, he was known around the area for always wearing a tracksuit when walking around the blocks. Dariusz was raised solely by his mother, and never met his father. Despite his failing grades in school and truancy, Kotwica was considered very intelligent, and was notably interested in Greek mythology. Sometime around 2005, he left his native Poland and began travelling around Europe, first settling to live in England for several years.

Dariusz Paweł Kotwica (born 1986), known as the Euro Ripper, is an itinerant Polish criminal and serial killer, responsible for at least three murders of pensioners in Austria and Sweden. Described as the "first European serial killer" who travelled using open borders, he is thought to be responsible for additional murders in the Netherlands, Czech Republic and the United Kingdom. The mentally-ill Kotwica is currently in a treatment center in Göllersdorf.