|Born|| ca. 1902|
|Cause of death||Suicide|
|Date|| October 19/20 1940|
|Location(s)||Mainz, German Reich|
|Weapon(s)|| Hammer |
Giebel, who was supposedly insane, hit his victims with a hammer and then cut their throats with a shoemaker's knife. The murdered children were aged 2 to 14 years, while a 5-year-old daughter of the Giebel's survived, because she was at the home of a relative.
Before committing suicide by cutting his own throat, Giebel wrote a six pages long letter that was barely decipherable. The bodies were discovered by neighbours around noon when they were alerted by the unusual silence in the house. Four of the children were found lying in their beds in one room, the other two children in a second room, and the 38-year-old and his wife in their bedroom.