Phillip's Murder
Who was responsible for King Phillip's murder?
Pausanius
Aristotle says that Pausanias attacked Phillip as he had allowed an outrage (rape) to be inflicted on him by Attalus. Plutarch also suggests this as a motive. The Oxyrynchus Papyrus claimed that Pausanius rushed forth with a knife, killing Phillip. Justin backs this up.
Olympias
Plutarch claims that Olympias "added her own exhortation to the younger man's [Pausanius] anger and incited him to the deed". This is supported by Justin. Justin also claims that Olympias was attempting to get her brother, the King of Epirus, to go to war with Phillip. Justin also reports that Olympias had horses waiting for the fleeing Pausanius. He adds that she placed a golden crown when he was on a cross and placed his remains in the same tomb as Phillip. Plutarch offers the motive that Olympias was attempting to position her son, Alexander, into power.
Alexander
Plutarch casts suspicion on Alexander by suggesting that Alexander had recited "the giver of the bride, the bridegroom and the bride" to Pausanius in reference to Attalus, Phillip and Cleopatra and the need for them to be murdered. Justin claims that "Alexander himself was not ignorant of the plan to murder his father" as well as claiming that Alexander feared that if Cleopatra (Phillip's new wife) had a son, then he would no longer inherit the throne.
The Persians
Curtius claims that Alexander sent a letter to Darius saying that he knew that Darius had plotted the murder of his father, Phillip.
The Greeks
Both Arrian and Curtius claim that Alexander, son of Aeropus, was responsible for Phillip's murder. Plutarch, in Moralia 327c, claims that "all Macedonia was festering with revolt" and that "Persian gold flowed freely" suggesting that the Greeks were in some way reponsible for his death.