The nephew of comedian Jim Jefferies is presumed to have been killed in an Australian Army helicopter crash over the weekend — with officials saying hope of finding the crew alive “has been lost,” according to reports.

An MRH-90 Taipan helicopter was flying during a training event for Exercise Talisman Sabre — a joint nation military operation — near Lindeman Island in Queensland, Australia when it crashed at around 10:30 p.m. on Friday, News7 reported.