Rhys Davies was driving his siblings Ambrose and Strahn along on Great Eastern Highway when their silver Nissan Navara ute hit a tree near Clackline, about 80 kilometres north-east of Perth.
Superintendent Gene Pears confirmed the brothers, aged 21, 19, and nine, were travelling with a 45-year-old family friend from New South Wales.
The Plymouth Brethren Christian Church says it’s giving ‘family and friends of the people involved in the accident – the help they need’.
