William Tyrrell first went missing from his grandmotherโs house in NSW in 2014 and remains missing despite one of Australiaโs most extensive missing person investigations.
This week, the boyโs biological father, Brendan William Collins is wanted for arrest โ though has been ruled out as a suspect in the case of the missing child.
Collins is wanted concerning a failure to appear in court, where he was being trialled for carrying stolen credit cards.
He was arrested on the charges in November last year, and noted to be โunsteady on his feet.โ
Collinsโ former partner, Karlie Tyrrell, is William Tyrrellโs biological mother.

William Tyrrell
Last year, a bombshell court ruling revealed that William was indeed in foster care at the time of his disappearance.
He was therefore in the care of the Department of Family and Community Services (FACS), being cared for by his foster parents when he went missing from his foster grandmotherโs house.
Statutory restrictions previously prevented this from becoming public knowledge but a Supreme Judge has now deemed this information to be โlegitimate public interest.โ
Last year an unprecedented award of $1 million was offered by the NSW government, for any information leading to the recovery of William Tyrrell.
In September last year, lead investigator into the disappearance of William Tyrrell said authorities had significantly narrowed down persons of interest surrounding the highly-publicised case.
Speaking with 9 News, Detective Chief Inspector Gary Jubelin of the NSW Police Homicide Squad said it was โhighly likelyโ police had already come across the perpetrator of the crime.
Det. Jubelin added that police are now turning their attention to a group of just a few hundred persons of interest, narrowed down from a list of thousands.
โThe strongest likelihood is that weโve already got the name of the person involved,โ he said.
โI would be sweating.โ