This section of the list of rampage killers contains those cases where at least half of the victims were relatives of the perpetrator or the perpetrator's spouse. Cases with more than one offender are not included. A rampage killer has been defined as follows: A rampage involves the (attempted) killing of multiple persons least partly in public space by a single physically present perpetrator using (potentially) deadly weapons in a single event without any cooling-off period. This list should contain every case with at least one of the following features: