After the landing of Datu Asin and his followers at Zamboanga, the governor found out by his spies that they had many arms and quantities of ammunition in their boats which lay in the roadstead opposite the town and fort. Suspicious and distrustful from the beginning, Zacharias interpreted these facts as positive proof of an intention on the part of the sultan and Datu Asin treacherously to attack the town when an opportunity offered itself. He then at once confiscated part of the arms, ordered the boats to leave the port, imprisoned the sultan and Datu Asin and all their retinue, and communicated his suspicions and the action taken to Manila. Among the prisoners were the sons and daughters of the sultan, several datus and dignitaries and panditas, and many male and female followers and servants. In all 217 persons entered the prisons of the fort, most of whom were later transferred to Manila and confined in Fort Santiago.
Zacharias’s interpretation of the action of the sultan and Datu Asin was simply absurd and his behavior reflected considerable discredit on his ability as an officer and administrator. It was further most regrettable that his views were accepted as true by higher authority in Manila where no clemency or redress was extended to the unfortunate sultan and datus.
By a degree of the Governor-General, the following accusations were set forth against the sultan and Datu Asin, viz:
1. That Prince Asin had not surrendered captives; 2. That whilst the sultan was in Manila, new captives were made by the party who expelled him from the throne; 3. That the number of arms brought to Zamboanga by Sulu chiefs was excessive; 4. That the letter to Sultan Mohammed Amirud Din insinuated help wanted against the Spaniards; 5. That several Mohammedan, but no Christian books, were found in the sultan’s baggage; 6. That during the journey to Zamboanga he had refused to pray in Christian form; 7. That he had only attended mass twice; 8. That he had celebrated Mohammedan rites, sacrificing a goat, and had given evidence in a hundred ways of being a Mohammedan; 9. That his conversation generally denoted a want of attachment to the Spaniards, and a contempt for their treatment of him in Manila,[61] and, 10. That he still cohabited with his concubines.
The greatest stress was laid on the recovery of the captive Christians, and the governor added, that although the mission of the fleet was to restore the sultan to the throne (which, by the way, he does not appear to have attempted), the principal object was the rescue of Christian slaves. He therefore proposed that the liberty of the imprisoned nobles and chiefs should be bartered at the rate of 500 Christian slaves for each one of the chiefs and nobles, and the balance of the captives for Prince Asin and the clergy.[62]
It is not therefore surprising to hear of the extraordinarily revengeful activity which the Sulus exhibited during the period of humiliation to which their sultan and nobles were subjected in Manila.
Bantilan was a man of strong personality, a warrior, and a leader. The expeditions which he organized against his enemies were unusually strong and left havoc everywhere. The towns he pillaged and the captives he carried away alarmed the Spanish Government to a high degree. A high council of war was convened in Manila in 1752, which declared for an unmerciful campaign and a war of extermination to be conducted with the utmost conceivable cruelty. Volunteers and Bisayan corsairs were called to aid the regular troops. Unlimited authority was granted them to annihilate the foe, burn his villages, destroy his crops, and desolate his lands. The corsairs were exempted from all taxes. They were allowed to keep or sell all female captives and all males under 12 and over 30 years of age. Old men and crippled persons were to be killed. Male captives between 12 and 30 years of age were to be turned in to the government; the captors to receive in compensation from ₱4 to ₱6 per man. Nursing children were ordered to be baptized. At first the corsairs were required to turn in to the government one-fifth of all valuables looted, but this was soon afterwards revoked and all corsairs who equipped themselves retained all their booty.
As part of the general campaign, Field Marshal Abad made another attack on Jolo with a force amounting to 1,900 men. The fleet cannonaded the forts for seventy-two continuous hours. A division of the troops landed and engaged the Sulus, but after suffering considerable loss retreated disastrously.
The raids of the Spaniards and Bisayans helped to increase the vigilance of the Sulus and excited them to extreme cruelty and an abnormal degree of revenge.[63]
The year 1753 is stated to have been the bloodiest in the history of Moro piracy. No part of the Bisayas escaped ravaging in this year, while the Camarines, Batangas, and Albay suffered equally with the rest. The conduct of the pirates was more than ordinarily cruel. Priests were slain, towns wholly destroyed, and thousands of captives carried south into Moro slavery. The condition of the Islands at the end of this year was probably the most deplorable in their history.[64]