 The Yakans were understandably wary of the Tausugs who proceeded to occupy much of the lowlands of the island's southeast coast, and have remained hostile to the Tausug kingdom that eventually flourished in the area.After several successful incursions on Zamboanga were known to originate from this new Tausug base, Spanish surveyors stationed in Zamboanga took note of this and recorded Datu Bantilan's settlement, which by then was conferred the formal recognition as a vassal kingdom of Sulu, the Karajaan of Maluso.Datu Bantilan died in the middle of 1763.