Hannibal Mago of Carthage led the expedition, took the city of Selinus by storm in 409 and then also destroyed the city of Himera. Syracuse and Akragas, the leading Greek cities in Sicily, did not confront Carthage at that time, and the Carthaginian army withdrew with the spoils of war after garrisoning their territory in Western Sicily. For three years, a lull fell on Sicily. No treaties had been signed between the Greeks and Carthaginians to signal a closure of hostilities. While the governments of Syracuse and Akragas took only preventive measures, Hermocrates, an exiled general of Syracuse, sought to take a more aggressive stance on the issue of Carthaginian aggression, hoping that his actions would enable him to return to Syracuse and assume a political position. He hired 2,000 mercenaries (1,000 of them former citizens of Himera) and five ships and then set up a base in the ruins of Selinus, building a wall for security around the acropolis. His force ultimately swelled to 6,000 men, (many former citizens of Selinus had joined him) and Hermocrates started to raid Punic territories at his discretion. He first defeated the men of Motya, then ravaged their land. His next target was the territory of "Golden Shell", the land around Panormus. In 407 BC, the Greeks defeated the citizens of Panormus (killing 500 of them) and plundered at will, retiring to Selinus with their spoils. These activities gained Hermocrates fame and sympathy with Sicilian Greeks, but no recall from Syracuse. Hermocrates then collected the bones of the Greek dead left unburied at Himera and sent them over to Syracuse for burial, an act that further enhanced his reputation among the Greeks (and brought about the downfall of Diocles, the Syracusan leader defeated at Himera and who had actually left the bones unburied) but did not end his exile from Syracuse. The general finally tried to stage a coup in Syracuse, where he died in a street fight. Syracuse and Akragas did not neglect their defences during the activities of Hermocrates. Akragas, expecting to be the first target of any Carthaginian retaliation, set about expanding its army while Syracuse started to expand its fleet. The walls of both the cities were also kept in repair. Syracuse and Akragas took speedy action to prepare for the expected Punic response after the downfall of Hermocrates.