Outback deaths (again!)

He says the men's vehicle was unsuitable for outback travel in extreme temperatures and that they did not have enough food or water or a two-way radio.

"One of them did have a mobile phone but obviously that's as good as a stick out there, you're not going to pick up any signal out there with a mobile phone," he said.

"What we can see is probably no more than 15, 20-odd litres of water they had - they've run out, so not enough water obviously."

He says the men's vehicle had flat tyres and had experienced engine trouble and they died not realising how close they were to water.

"Part of the tragedy of it really is that another nine kilometres down the road was a fully functional bore," he said.

"They did have some tools, but not enough to probably do what they had to do ... I don't know was wrong with the engine, but bear in mind you are a long way from nowhere and no one's coming past, you've got to have the tools for every conceivable situation and you've got to have heaps and heaps of water," he said.