 Some say that both Diomedes and Odysseus drowned Palamedes.Another version says that he conspired with Odysseus against Palamedes, and under the pretence of having discovered a hidden treasure, they let him down into a well and there stoned him to death.Others say that, though Diomedes guessed or knew about the plot, he did not try to defend Palamedes, because Odysseus was essential for the fall of Troy.