Australia has asked Indonesia to extradite a former Catholic priest accused of molesting his parishioners' children, so he can face child abuse charges in Adelaide.

South Jakarta District Court began hearing the application against Charles Barnett yesterday. It was presented with details of alleged sexual assaults against nine boys between 1977 and 1994.

Soon after the last alleged offence Mr Barnett moved to Indonesia, where he has taught English and runs a clothing business.