On 21 March 1849, Haitian soldiers attacked the Dominican garrison at Las Matas. The demoralized defenders offered almost no resistance before abandoning their weapons. Soulouque pressed on, capturing San Juan. This left only the town of Azua as the remaining Dominican stronghold between the Haitian army and the capital. On 6 April, Azua fell to the 18,000-strong Haitian army, with a 5,000-man Dominican counterattack failing to oust them. The way to Santo Domingo was now clear. But the news of discontent existing at Port-au-Prince, which reached Soulouque, arrested his further progress and caused him to return with the army to his capital.