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|Birth name||Wilhelm Brückner|
|Born|| ca. 1894|
|Cause of death||Suicide|
|Parents||Margarete Barbara Brückner|
|Date|| June 6/7, 1925|
11 p.m. – 4 a.m.
|Location(s)||Hassenberg & Lindenberg, German Reich|
|Weapon(s)|| Axe |
Brückner, who was described as a withdrawn oddball, worked as a basket maker. He was married twice and had a daughter that was 1 year old at the time of the murders. His first marriage failed after disaccords with his wife about their religious faith.
When Brückner was about 10 years old his father was struck and killed by lightning, while he himself was left unconscious, an incident that was said to have caused a change of his character. During World War I he was conscripted repeatedly, but was discharged each time due to his mental state, the last and final time in 1917. An evaluation conducted after his murders described him as a hysteric epileptic, suffering from mental retardation.
Brückner had an interest in the supernatural and various books about witchcraft, ghosts, and evocation, as well as two Himmelsbriefe were found among his belongings when police searched his home. He was also interested in notorious contemporary murderers, and was especially occupied with serial killer Fritz Haarmann. It was stated that he had sketched the murderers head and studied reports about his case in detail. Police also found a note at his workplace reading "Massenmörder Haarmann! Massenmörder Denke! Massenmörder ? ? ?" (Mass murderer Haarmann! Mass murderer Denke! Mass murderer ? ? ?) in reference to Fritz Haarmann and Karl Denke, another serial killer whose crimes made headlines at that time.
At the time of the murders Brückner lived, together with his mother, at the house of his sister and her husband, and was said to have argued with them frequently. He was believed to have killed his sister-in-law two years prior to the mass murder, and in the days leading up to June 6 he made various comments that indicated he had planned his crime for some time.
During the night of June 6, 1925, 31-year-old Brückner cycled to Lindenberg, arriving there at about 11 p.m. He waited for his brother-in-law, Hugo Birnstiel, and accompanied him for a while on his way, but eventually lured him into a forest, where he hit him with a piece of iron on the back of his head. The 19-year-old managed to escape, whereupon Brückner returned to Lindenberg to the house of his parents-in-law where his estranged wife was living. He waited for the pregnant woman at the outhouse and, apparently after she had declined his request to return to him, cut her throat with a knife. While she ran back to the house and died in her father's arms, Brückner made his two-hour trip back to Hassenberg.
There he entered the house of his sister, Wilhelmine Rosenbauer, and killed her, her husband Eduard, and their five children – four girls aged 2, 10, 16 and 19 years, and a boy aged 8 – as well as his own mother by smashing their skulls with an axe and cutting their throats with the kitchen knife. Subsequently he washed the bodies of his mother and Ilse Brückner, before finally hanging himself at his mother's bed. Police, alerted after the murder of his wife, arrived at the house around 4 a.m., but could only ascertain the deaths of all its inhabitants.
Brückner left a letter where he accused his brother-in-law, Hugo Birnstiel, to have had an incestuous relationship with his own sister (Brückner's wife), which had resulted in her pregnancy. He also alluded to a conflict about some geese with Eduard Rosenbauer, whom he called a savage. It was not believed that these accusations had any foundation in reality though, instead it was suggested that Brückner might have heard imaginary conversations between his wife and Birnstiel that made him believe they had a relationship.
Among those killed were:
- Margarete Barbara Brückner, 71, Wilhelm Brückner's mother
- Wilhelmine Karoline Rosenbauer, 41, Wilhelm Brückner's sister
- Eduard Rosenbauer, 44, husband of Wilhelmine Rosenbauer
- Ilse Brückner
- Emmy Brückner
- ↑ German kills 9 and hangs himself, The New York Times (June 9, 1925)
- ↑ 2.0 2.1 2.2 2.3 Zu der Mordtat in Hassenberg, Coburger Zeitung (June 9, 1925)
- ↑ 3.0 3.1 3.2 Die Beerdigung der Opfer des Hassenberger Massenmörders, Coburger Zeitung (June 11, 1925)
- ↑ 4.0 4.1 4.2 Über die Mordtaten in Hassenberg, Coburger Zeitung (July 31, 1925)
- ↑ Hassenberg, Coburger Zeitung (June 18, 1925)
- ↑ Furchtbare Bluttat in Hassenberg, Coburger Zeitung (June 8, 1925)
- ↑ Der Massenmord in Thüringen, Die Neue Zeitung (June 9, 1925)
- ↑ Hassenberg, Coburger Zeitung (June 15, 1925)
- ↑ Neunfacher Mord und Selbstmord, Jenaer Volksblatt (June 8, 1925)
- ↑ Furchtbare Bluttat, Ingolstädter Anzeiger (June 9, 1925)
- ↑ Ein zweiter Angerstein, Neuer Hochheimer Stadtanzeiger (June 9, 1925)