On the 20th of June, 2006, nursing student Frauke Liebs (21) was last seen at a pub, where she was watching the FIFA World Cup with a friend. She had borrowed her friend's phone battery but returned it before leaving to go home. The pub was only 1.5km from her home.
At 12:49 AM Frauke's housemate received a text message from her mobile phone, saying that she would be home later. However, she did not return home that night, and when she also failed to appear at work the day after, her mother reported her missing.
The police discovered that the text message had been sent from Nieheim, a small city about 35 km north-east of Paderborn. In the following days, Liebs called her housemate five times via her mobile phone. Police were able to locate the calls, which all came from different industrial areas in Paderborn. During these calls, Liebs continued to say that she would return home soon but did not communicate any information about her situation. She provided only vague or evasive answers to questions. Liebs' last phone call was on June 27th in the presence of her sister, who also talked to her. During this conversation, she is said to have answered the question of whether she was being held captive with a faint "yes", immediately followed by a loud "no". Contact broke off after this phone call.
Then, on October 4th, 2006, Liebs' skeletonized body was found by a hunter in a forested area near Lichtenau. The body was found with the clothes she was wearing on the day of her disappearance. Her mobile phone, handbag, wallet, and wristwatch were not found. Due to the condition of the body, the time and cause of Liebs' death could not be determined.
Police believe that Frauke had been kidnapped after leaving the pub and had been held captive in Nieheim (where the first texts were sent from.)
Her case remains unsolved.