not allow it. Upon being delivered to Salah ibn Salah, the noble hostage Prince Ferdinand the Holy and his small entourage of servants, which included the secretary Frei João Álvares, immediately was dispatched under Salah ibn Salah's guard to Asilah. Portuguese chroniclers report that at the very final stage, some renegade Moroccans attacked the embarking Portuguese on the beach – killing an additional forty. However, the skirmish probably was provoked by Portuguese soldiers trying to smuggle some of the forbidden weapons with them. Nonetheless, this beach skirmish later provided the excuse that the Moroccans had broken the treaty first, thus rendering it void. By October 19, the troops were all aboard, and the ships set sail. It is said that the honor of being the last men to leave the beach was shared between the admiral Álvaro Vaz de Almada and the marshal Vasco Fernandes Coutinho. After the embarcation was complete, Henry decided not to release Salah ibn Salah's son (as he was supposed to). As a result, Salah ibn Salah also held on to his four noble hostages, and dispatched them under arms to Asilah. In all, the siege of Tangiers lasted 37 days – 25 days with the Portuguese besieging Tangiers, 12 days with the Moroccans besieging the Portuguese camp. It is said that Portuguese casualties numbered 500 dead and unknown number injured. Moroccan casualties are unknown. Alternative timeline The timeline and events proposed above follows that reported by royal chronicler Ruy de Pina. However, Frei João Álvares, who was an eyewitness to the battle, places the dates and events on a somewhat different timeline. Álvares reports that Tangier was assaulted immediately on the first day the expeditionary force arrived (September 13), a second assault within a couple of days (September 14 or September 15). The first attack by a Moroccan relief army is placed on September 16, another the next day (September 17), before the larger set piece encounter in the valley and the sally by the Tangier garrison (September 19). Álvares reports a third failed assault (Pina's second) on Tangier on September 20. The arrival of Abu Zakariya's army and the battle of Tangiers is dated on September 25. The second Moroccan assault on the siege camp on September 26, and the first emissaries sent by the Portuguese to the Marinid camp right after. The seven-hour assault of the siege camp is dated September 28, with