The Romanian perpetrator and the Romanian female victim were both preliminarily arrested as they vigorously argued with each other on the street. During questioning, it turned out that she wanted to free herself from forced prostitution. Based on the statements, possible links to a criminal group in Romania, Bulgaria and Switzerland were identified. A European Investigation Order was issued in each case, but this did not lead to any results. This is surprising, because a witness (customer of the victim) had testified that he had been offered to ransom the woman for 10,000.00 EUR.