NEW : Sudanese president 's plane left Iran for China but turned back , Sudanese officials say . Omar al-Bashir is the subject of an International Criminal Court arrest warrant for genocide , war crimes and crimes against humanity in the region of Darfur , where war has continued since 2003 . Comment: The Sudanese president was scheduled to visit China .
NEW : Sudanese president 's plane left Iran for China but turned back , Sudanese officials say . Comment: The Sudanese president was scheduled to visit China .