On the afternoon of June 11, 323 BC, Alexander died in the palace of Nebuchadrezzar II of Babylon. He was just one month short of attaining 33 years of age. Various theories have been proposed for the cause of his death which include poisoning by the sons of Antipater or others, sickness that followed a drinking party, or a relapse of the malaria he had contracted in 336 BC. 

It is known that on May 29, Alexander participated in a banquet organized by his friend Medius of Larissa. After some heavy drinking, immediately before or after a bath, he was forced into bed due to severe illness. The rumors of his illness circulated with the troops causing them to be more and more anxious. On June 9, the generals decided to let the soldiers see their king alive one last time. They were admitted to his presence one at a time. Because the king was too ill to speak, he confined himself to moving his hand. The day after, Alexander was dead.

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Alexander died because of sickness