The 42-year-old Castrop-Rauxel resident apparently stabbed his wife and two sons during a family dispute around midnight on Thursday. As the situation escalated, neighbours apparently opened the apartment door, after which the man jumped from the balcony. He died later in the hospital.
His 38-year-old wife and seven-year-old son sustained serious injuries, but doctors were able to stabilise both patients in emergency surgery. The second son, a four-year-old, sustained only light puncture wounds.
Police said they are not sure whether the man's wife also injured him with a knife and are awaiting autopsy results from the state prosecutor's office.