A rideshare passenger has been identified following a triple-fatal road crash in Sans Souci, in Sydney’s south. Police have identified the victim as Seamus Duignan, 28. The accounts report that Duignan was travelling home in an Uber after attending a concert and celebrating a birthday. While he was in the vehicle, a white Audi collided with the rideshare in the area of Sans Souci. The crash results in three deaths, though the provided reports focus on the identification of Duignan. The circumstances of the collision are described as still being examined, with new details continuing to emerge. Emergency services responded to the incident, and the matter is treated as a serious crash. Investigators are working to determine how the collision occurred and whether any contributing factors were involved. Authorities have not been quoted in the supplied information beyond the identification and broad description of events leading up to the crash.