 The continuing difficulty posed by the Tausug Karajaan in Maluso to Spanish interests on Basilan exemplified by its willingness to enter into treaties and agreements with other European powers, however, forced the Spanish to rethink this policy of leaving Maluso essentially free from Spanish rule.To ensure the unassailability of Spain's claims over Basilan, a military-naval operation commenced to put an end to the enduring Maluso Kingdom.From the newly established Fort of Isabella Segunda and the Spanish Naval headquarters also in Isabela, the Spanish forayed into the erstwhile Tausug dominated area of Maluso with a band of Spanish and local troops, attacked the Tausug base led by Zamboanga District Gov.