Questão jurídica principal
Whether the appeal against the detention extension of 17 January 2008 still had a live interest after the appellant's transfer to prison.
Decisão extraída
The detention had ended upon transfer to prison, so there was no longer any current legal interest in deciding the appeal on the merits.
Fundamentação extraída
Under the cited immigration statutes, removal detention ends when the person enters penal custody; any new detention would have to be ordered and reviewed anew. The restrictive exceptions to deciding moot cases were not met.