Well, this week is coming to an end but it doesn't feel like we are any closer to having answers in the William Tyrrell investigation.

The investigation into the three-year-old boy's disappearance back in 2014 entered its fourth day today with police discovering a potential piece of evidence this morning.

A piece of light blue cloth measuring around 8cm by 8cm has been sent away for forensic analysis with results expected to take up to three or four businesses days.

Detectives are also waiting for results from further potential evidence found earlier this week.

Meanwhile farmers in the state's central west are bracing for answers as wet weather threatens to destroy their crops for the second time in five years.

Normally farmers would be delighted with a period of rain after years of drought, but floodwaters in the Forbes region of central NSW continue to rise.

One farmer said the floods they are seeing now are "only the start of the flood that's coming through".

However, we did get some answers into what happened when northern NSW boy Anthony "AJ" Elfalak disappeared on his family's property in the state's Hunter region earlier this year.

The boy was thankfully located alive just days after he went missing, and police determined AJ's disappearance "to be as a result of misadventure".

Another mystery was also solved today. The previously unknown soldier whose body was recovered after the sinking of the Australian warship HMAS Sydney II 80 years ago now has a name.

He was identified as Able Seaman Thomas Welsby Clark from Brisbane.

His body was the only one recovered after the ship sunk off the West Australian coast in 1941.

Chief of Navy Vice-Admiral Mike Noonan said "his long voyage is complete, may he rest in peace".

However the biggest question of the day is why Prime Minister Scott Morrison continues to make the COVID vaccine rollout more difficult than it needs to be?

First it wasn't a race, and now he's being accused of undermining the rollout after calling for the scrapping of Queensland's vaccine mandate when the state reaches 80 per cent jab coverage.

Deputy Labor leader Richard Marles accused the coalition of picking a fight with Labor states, AAP reports.

"This undermines the vaccine rollout that is going on in WA and Queensland," he said.

"The prime minister wasn't saying this in respect of NSW."

That's awkward considering unvaccinated folk in NSW are still facing tougher restrictions than those who have had both jabs.

Very awkward indeed.

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