But in 358 BC, Philip II of Macedon, father of Alexander the Great, defeated the Illyrians and assumed control of their territory as far as Lake Ohrid (present-day Macedonia). Alexander himself routed the forces of the Illyrian chieftain Cleitus in 335 BC, and Illyrian tribal leaders and soldiers accompanied Alexander on his conquest of Persia. After Alexander's death in 323 BC, the Greek states started fighting among themselves again, while up north independent Illyrian polities arose again.