At an earlier hearing Mr Greig said if the boy avoided a jail sentence, it would be welcomed by all of the family.
But Judge Strettell said normal procedure was to decide what jurisdiction it should be heard in only after receiving written submissions by a youth advocate and police.
"I don't want to minimise serious matters ... This was a very serious matter, where you are wishing to enter a plea and be dealt with in the Youth Court on a charge where liability is a maximum of 14 years' imprisonment,'' the judge told the boy.
He remanded the boy in custody to August 24 for the issue of jurisdiction to be considered.
In the meantime, Child, Youth and Family will compile a report which will include recommendations on the sentencing options put forward at the Family Group Conference.