Complex sentence: Several successful suicides have prevailed by the subject being killed by a passing Airport Express Train; these are not considered accidents by the authorities, and not included in statistics; they do however cause delays on all services for hours after the incident takes place.
Split into simpler sentences: Several successful suicides have prevailed by the subject being killed by a passing Airport Express Train. These are not considered accidents by the authorities, and not included in statistics; they do however cause delays on all services for hours after the incident takes place.