Nymphomaniac 'killed her two newborn babies so she could go to German swingers club' Steffie Koppers 'became pregnant with babies during her visits to the club' Police sources say she didn't want the children around to 'bother' her A German nymphomaniac who allegedly killed her two newborns so she could go to a swinger club for more sex has been arrested after the corpses of her babies were found by her father. Steffie Koppers, 24, bragged repeatedly about her visits to the sex club Kali on her Facebook page. In one, she wrote: 'I'm in the swingerclub Kali. We are three nice ladies but we want men and there are none here! Another reads: 'It seems it's bad when a solo woman goes to a swinger club to get gratification from more than one man.' Nymphomaniac: Koppers, 24, bragged repeatedly about her visits to the sex club Kali on her Facebook page Police believe Koppers, who worked for a local tourism authority, became pregnant with the babies she killed through her sex encounters at the club in Kamp Lintfort. One of the deaths occurred in November last year. She lived on a remote farm with her father at Weeze near Duesseldorf. On Tuesday this week, when she was at work, her father Heinz made the terrible discovery of the baby corpses in the home they shared. One was reduced to a skeleton, the other wrapped in a sheet. He telephoned the police who arrested his daughter at her place of work. Murder commission head Gerd Hoppmann said: 'She admitted what happened but not comprehensibly able to tell us exactly why.' Police sources said she was 'addicted' to going to the club and didn't want the babies around to 'bother' her. One cousin told the Bild newspaper: 'She was obese. We suspected on more than one occasion that she was pregnant but she denied everything. The Kali sex club charges men up to £65 a time to enter but women get in for less than £10. A club spokesman was unavailable for comment although media reports said police are talking to the clientele to try to find the identities of the men who fathered the killer's children. Favourite haunt: The Kali sex club charges men up to £65 a time to enter but women less than £10