MELBOURNE, Australia (AP) — An Australian mother of four was held in custody after she appeared in a court on Thursday charged with traveling to Syria and joining the Islamic State group. Rayann El Houli, 34, was arrested at her Melbourne home eight months after she returned to Australia via Lebanon with her children and another woman, police and her lawyer said. The arrest came two days after seven women and 12 children linked to IS returned to Australia from a Syrian refugee camp against the wishes of the Australian government. Three weeks ago, four women and nine children in similar circumstances returned from the same Roj camp for displaced people, which is located near the area where the frontiers of Syria, Turkey and Iraq converge. Three of the four women were charged on arrival with slavery and terrorism offenses and remain in custody. All the women who returned from Syria this month remained under police investigation.…