Marina, Keller's first companion, said he had forced her into prostitution because he was in constant need of money because of his love for luxury, casinos, horse racing, great restaurants and big-name hotels. One of his friends said that while he was in relationship with his second wife Séverine, she was already in relationship with another man. When he learned of this, Keller went to see the man and put a gun in his mouth, threatening him to leave his wife alone.