The Carthaginians followed a strategy which the Athenians had used in 415 BC, and were successful in isolating Syracuse. A pestilence broke out in the Carthaginian camp in the summer of 396 BC, which killed the majority of the troops. Dionysius launched a combined land and sea attack on the Carthaginian forces, and Himilco escaped with the Carthaginian citizens after an underhand deal with Dionysius. The surviving Libyans were enslaved, the Sicels melted away while the Iberians joined Dionysius. Dionysius began expanding his domain, while Carthage, weakened by the plague, took no action against Syracusan activities until 393 BC.