The incident took place yesterday evening at 18.30 in the North Rhine-Westphalian city. When the neighbors rang the doorbell door to ask for quieter, the situation escalated. First, with a chair leg, the man with Portuguese nationality went to the tenants, hit one of them by the arm and injured him. Then he threatened with a knife. The alarmed police could not confront the man, he entrenched himself in his apartment.