The missing Marokopa children are caught in an 'adults' game”, says a sibling in an emotional plea for help to raise a reward for information that helps find them.

'Bring my siblings home,” says a Sunday post on the Missing Marokopa Children page - even if it means giving their father Thomas Phillips amnesty.

A warrant was issued for Phillips' arrest after he failed to appear in Te Kūiti District Court in January on a charge of wasting police time and resources in relation to the family's first disappearance.

A search for Phillips and his children – Jayda Jin, Maverick and Ember – had been going on ever since, captivating the nation and frustrating police and searchers.

Storm Dawson, the eldest sister of the children now aged 9, 7, and 6, launched a Givealittle page in October in the belief a reward was the most effective way to find the children.

At the time of writing, $3285 had been raised towards a goal of $10,000, and fundraising is due to finish early November.

A Sunday Facebook update, by an unnamed second-oldest sibling, says 'My family and close friends went through hell last year.”

The poster also says they had been cut off from the children for about a year 'before this happened” and feel Phillip's actions have 'malicious intent”.

'What he's doing now, keeping my siblings away and hiding them, I imagine him doing with glee, knowing he's hurting us all.

'What's happening is an adults' game and something I wish my siblings were removed from in the beginning.”

However, they say Phillips could be granted an amnesty 'for all I care, but bring my siblings home”.

The poster is worried about the effect living in hiding will have on the children.

'They're living like fugitives. All they're learning is to hide and if that's what they're shown love to be they're going to be three traumatised individuals in the future.”

Someone somewhere will have contact with Phillips, 'and maybe told someone else”, the post says.

'If child welfare doesn't speak to them maybe money will.”

-Benn Bathgate/Stuff.