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his murders even within the densely populated
Frankfurt area, without a risk of being caught. The victims were tied up, then the killer abused them and "disposed of them like garbage". For weeks or even months, the bodies in the sewers began to decompose. The dead usually remained undetected in the sewage system for a long time until they were eventually flushed into the sewage treatment plants, where they often blocked the screw pumps to separate the solid particles. The advanced decomposition of the bodies has made the identification and the clarification of the factual circumstances in the investigation much more difficult. The first victim, for instance, was identified 2.5 years after discovery.
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206:. The naked corpse of a young man, only in socks, was found near a footpath in a forest between Atzenhain and Lehnheim during the military manoeuvre "Gordian Shield". The body was heavily mummified with partial skeletonization after a lying time of at least six weeks. A violent skull fracture had been found to be the probable cause of death. Since the identity of the decedent could not be clarified, the police assumed that he may have been a foreigner in transit through
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homosexuality or with other same-sex people. His inclinations apparently include sadistic bondage. The suspect likely moved from
Giessen to Frankfurt at the end of the 1970s and lived out his fetishes in the local milieu. He had also been familiar with the area and was highly mobile. The fact that he threw his victims into the sewerage after violating them is probably a hint of a deep-rooted hatred.
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this was not sufficient evidence, as the traces of blood found in the summer house did not match
Hildebrandt's. In the home of the suspect, who had known two of the other victims alongside Hildebrandt, police secured a gas pistol, several knives, including a butcher knife, and handcuffs. Due to lack of evidence, however, there were no charges.
236:. The collecting rake was blocked by a clothed body. Michel was probably still alive when he was thrown into a manhole, and most likely drowned. The identification of the almost unrecognizable corpse was difficult. The young man was around 17 years old and was characterized by a clear overbite. He was a prostitute in Frankfurt.
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and had been involved in the
Frankfurt heroin scene since 1981. Hildebrandt, who had spent much of his youth in congregate care, was in apprenticeship and lived a "restless life" in Frankfurt. He is said to have occasionally prostituted. He was last seen in January 1983, accompanied by three men, and
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Horst Kropp and the "AG 229" were entrusted with the investigation of sexually motivated murders of young people. For some time, a 40-year-old storeman from
Offenbach, who was mainly convicted of multiple sexual misconducts toward minors and molestation, had been the prime suspect. He was known for
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The first murder is believed to have happened at the body's site of discovery. Only when he resumed killing, the suspect could have figured out that throwing a dead or dying victim down the sewers was a more effective way to get rid of them. The quick disposal of the bodies allowed him to carry out
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where he performed sadistic sex games with them. He is said to have acted very brutally during these but bribed his victims with money to keep quiet about what he did to them. Investigators found out that the prime suspect and Markus
Hildebrandt had visited the same gay bars in Frankfurt. However,
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The criminal psychologist Rudolf Egg suggested that the suspect might be a single person at the age of about 50 years without family ties or friends. It is possible that the culprit himself had been a victim of sexual abuse and may therefore have developed a disturbed relationship with his own
243:-Buchschlag sewage plant. According to the Offenbach police, the decedent was washed ashore by a sewage pipe. His hands were handcuffed, but there were no other externally visible injuries. The tattoos on the upper arms showed different motifs and the word "Fuck". Hildebrandt came from
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11 October 1983: Oliver
Tupikas (11 years), Niederrad. The youngest victim, was also found in Niederrad's sewage treatment plant. Probably pushed down a manhole after being murdered. Traces of legcuffs were found on the body. Oliver had run away from home and had not been seen alive
221:. Found in an oblique position behind an inflow. The body had significant damage, such as the right thigh being torn off, the pelvis and skull being smashed, and exposed bones. According to the autopsy report, the corpse was in an advanced state of decomposition with extensive
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278:. Bones and pieces of clothing from the presumably last victim were found in a tributary of the drainage system. The teenager had been missing since 1983.
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boy was found in the
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The killings took place from 1976 to 1983. The victims were seven boys and male adolescents aged between 11 and 18 from
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2 July 1983: Markus
Hildebrandt (17 years), Darmstadt-Erzhausen. A tattooed body was discovered in the sump of the
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growth. He was probably lying there for over six months, and the cause of death could no longer be determined.
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and met the culprit. The boys' hands were tied to the back with a rope or cord and then killed by apparent
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Mortuary finds in sewage treatment plant. Aktenzeichen XY, 24. February 1984 from 37:47
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Police report Kripo
Frankfurt in Harbort: Mörderisches Profil: Phänomen Serienkiller
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7 September 1976: Unidentified male (15–18 years), found in Stangenrod,
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https://olis-cold-cases.blogspot.com/2019/03/80er.html
169:(likely Baseler Platz at the "Tivoli" arcade) or the
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Harbort: Mörderisches Profil: Phänomen Serienkiller
51:. Unsourced material may be challenged and removed.
181:. For some, however, death presumably occurred by
495:Abominable murder series in the Rhine-Main area
489:Abominable murder series in the Rhine-Main area
444:Gießener Allgemeine Zeitung, 13. September 1983
306:enticing homeless teens to his summer house in
228:19 September 1982: Bernd Michel (17–18 years),
453:Gießener Allgemeine Zeitung, 17. November 1984
321:List of fugitives from justice who disappeared
396:Gießener Allgemeine Zeitung September 8, 1976
375:Gießener Allgemeine Zeitung, 9. Dezember 1976
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462:Gießener Allgemeine Zeitung, 19. August 1989
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173:area where some of them may have worked as
127:Screw conveyors of a sewage treatment plant
344:Mörderisches Profil: Phänomen Serienkiller
493:Text contribution, Kriminalreport Hessen.
487:Film contribution, Kriminalreport Hessen.
472:Film contribution, Kriminalreport Hessen.
405:Gießener Allgemeine Zeitung, 25. Mai 1982
255:9 September 1983: Fuad Rahou (14 years),
111:Learn how and when to remove this message
274:21 June 1989: Daniel Schaub (14 years),
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248:allegedly claimed to be travelling to
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49:adding citations to reliable sources
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157:area during the 1970s and 1980s.
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36:needs additional citations for
564:Violence against men in Europe
259:. The body of the 14-year-old
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326:List of German serial killers
559:Unsolved murders in Germany
554:Unidentified serial killers
153:of male adolescents in the
135:or "Sewage Plant Murders" (
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534:Crimes against sex workers
16:Unsolved Frankfurt murders
544:Serial murders in Germany
423:Olis Cold Cases Blogspot
331:List of unsolved murders
213:23 May 1982: Erik (17),
529:1989 murders in Germany
524:1983 murders in Germany
519:1982 murders in Germany
514:1976 murders in Germany
387:maneuver in East Hesse
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43:Please help
38:verification
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250:Saarbrücken
197:Victim list
179:blunt force
175:prostitutes
508:Categories
363:References
337:Literature
308:Riederwald
141:Kanalmorde
71:newspapers
539:Fugitives
257:Niederrad
234:Erzhausen
230:Darmstadt
223:adipocere
219:Offenbach
167:Frankfurt
549:Sewerage
385:REFORGER
350:, 2006,
315:See also
261:Moroccan
241:Dreieich
215:Dreieich
187:sewerage
183:drowning
204:Giessen
185:in the
161:Victims
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