Gday
From what they said on the news report, they picked up several cigarette butts from near the mine shaft where the husbands body was found, apparently the cig butts were seen when the cops first got there but they did not collect them, and you have to wonder why not as it was obviously a crime scene?, it was also said that they went back some time later and retrieved them, not sure how long after that was?, anyway they said that they were tested and apparently contained his wifes dna?, not speculating or anything but it all sounds rather odd that the butts would be there.
There were also questions about the story the person of interest gave on which way was taken to get back to Perth, said left and went via a bitumen road, but that they had evidence from a car gps saying he was on an unsealed road, I know the area fairly well and have prospected there a few times, and in order to get to the unsealed road the person would have to go the long way round back all the way through town and that would not make sense, it would be far quicker to head straight from the camp site through to Paynes Find and on the bitumen highway back to Perth.
cheers
stayyerAU