Police spokesman tweets video of Matthew and Grace Huang on motorcycle headed home . They leave Qatar after appellate court convicted them in death of 8-year - old daughter . There was delay in lifting travel ban that diplomatic sources blame on legal procedures . Prosecutor alleged Huangs bought her cheaply in Africa , starved her to death .
Family spokesman tweets photo of Matthew and Grace Huang on plane headed home . Huangs leave Qatar after appellate court clears them in death of 8-year-old daughter . There was delay in lifting travel ban that diplomatic sources blame on legal procedures . Prosecutor alleged Huangs bought daughter cheaply in Africa , starved her to death .