Kim Marie Johansson
"Kim Marie" Johansson, born Kristoffer Johansson, is a Swedish convicted killer. In 2014 Johansson was sentenced to 10 years in prison for murdering and dismembering his ex girlfriend, Vatchareeya Bangsuan. The case, known as the Boden massacre, is considered the most serious in Norrbotten's criminal history. Disappearance of Vatchareeya Bangsuan 
On 7 May 2013, Cattaliya Similä (born January 5, 1970) and her husband Hans Jan-Erik Similä (born July 20, 1966) reported their daughter Vatchareeya Bangsuan (born August 1, 1992) missing in Boden to the Luleå Police Department. Two weeks later, body parts were found scattered in the forest. Vatchareeya Bangsuan, from Boden, was studying to be a civil engineer at Luleå University of Technology, was about to get a driver's license, and was about to get a new karate belt the day after she disappeared. Kim Marie Johansson (born Kristoffer, April 29, 1991), her then boyfriend, participated in her search and pretended to be very worried. Traces of blood were later found in the bathroom of Johansson's home and on the back door of his car. When he was sentenced by the district court to fourteen years in prison for murder, it was learned that he had also killed and dismembered his dog. Justice proved that Kristoffer had stabbed his girlfriend in Sweden in the heart and lungs with a knife-like object. He then must have cut up her body, dismembered her and hid parts of her body in several different places. On May 20, Missing People found body parts in a desolate house in Mjösjöberget. Body parts were found in an abandoned house in Mjösjöberget and surrounding areas, others in the woods of Gammelängsberget, but her hands were never found. It was also learned that Kristoffer had killed and cut up his own dog. The body parts were found in the woods of Gammelängsberget. The town was shocked and numerous popular demonstrations were held to demand the appearance of the young woman. The case is considered the most serious in Norrbotten's criminal history and had enormous media coverage in Sweden and Norway. On May 23, 2013, she was arrested. At the age of 22 he was sentenced to 14 years in prison, although the sentence was later reduced to 10. On January 22, 2014, he was sentenced to prison for manslaughter, but on April 16, 2014, the Court of Appeals amended the sentence to 10 years for manslaughter. Gender reassignment

In 2018, 27-year-old Kristoffer Johansson self-perceived himself as a woman and changed his name to Kim Marie Johansson. According to Swedish law, no one could question it. He later applied for a transfer to a women's prison. He was imprisoned in Norrtäljeanstalten, after the Court of Appeal reduced his sentence to ten years in prison despite the prison management considering him extremely violent. Johansson was found guilty of repeated neglect and had 34 formal warnings for refusing to work, unauthorized possession of tablets, interest in weapons, war and explosives, personality functioning with lack of emotional resources, inflexible thought pattern, vulnerability to stress and difficulty in social interaction. He engaged in writing pornographic stories. He applied to serve the remainder of his sentence in Hinseberg women's prison, which was granted after the Swedish Prison and Probation Service first rejected him. The Swedish Prison and Probation Service approved his application to enter a women's prison and transferred him. At that time he was reported to the police for threatening to kill a prison guard. He then opened an Instagram profile, as Magdala Johansson, from which he began to upload photos of "her artwork" (a drawing of dismembered female hands) and the rifle with which he plans to "kill the TERF" ("Kill the TERF" is a motto of transactivism), in reference to journalist Kajsa Ekis Ekman, who had written an article in the Swedish newspaper Aftonbladet, in which she criticized his sexual identity and the fact that he as a so-called transwoman was transferred to a women's prison as a fully-intact male. Journalist Kajsa Ekis Ekman, was also threatened for saying that the trans law was dangerous for women, fears that she will be murdered on one of her furloughs. Johansson claimed that he has actually been a girl since she was five years old, but that it took him several years to realize why he was the way he was and felt the way he felt. He said he would feel better in a women's prison as he was not comfortable around men and was scared. As a result, he moved from a Class 1 maximum security institution to a Class 2 lower security institution with women. In 2020, Johansson was prosecuted for threatening known feminist journalist Cissi Wallin. Cinema
The documentary "In the Head of a Murderer - Kim Marie Johansson" on TV3 Dokumentär was made about his case. References 

Living people
21st-century Swedish women
Norwegian assassins
People from Norrbotten County
2013 crimes in Sweden
1991 births