Athens revolted in that year against Demetrius' rule and elected Olympiodorus as strategos.
Olympiodorus raised a force among the Athenian citizens, including old men and children, and attacked the Macedonian garrison that had retreated to the fort at the Mouseion Hill which he took with the loss of just 13 of his men.
[1] On receiving news of the revolt Demetrius gathered forces from the cities he still held and put Athens under siege.
[2] In the treaty signed Demetrius received some fortresses in Attica but Athens was freed from a Macedonian garrison.
Pyrrhus arrived with his army behind Demetrius, forcing him to retreat.