Tibao was described to have become the "absolute sovereign" of Sandwip, as he was even obeyed by the natives as an independent ruler. In the course of a short time, his territory extended to the up until the Lemro River. He had a house built for himself and heavily increased trade in the island, boosting his economy. Many merchants resorted to the island, and by their commerce contributed much to increase his revenue. Tibao developed a military of 80 cannon ships, 200 horses, 2000 native soldiers and 1000 Portuguese soldiers. Tibao later colonised the islands of South Shahbazpur and Patelbanga from the Raja of Batecala (Bacola). In 1616, Tibao denounced himself as an independent sovereign, offering to become a dependent ruler under the Portuguese Empire and annually provide Portuguese Goa with large amounts of rice. The condition behind the deal was for the Portuguese Viceroy of Goa to assist Tibao in a battle against Arakan which was now ruled by Razagyi's son, Min Khamaung. The Viceroy of Goa accepted the deal and dispatched a fleet led by Don Francisco. They joined Tibao's fifty ships, sailing towards Arakan. Khamaung and his Dutch allies defeated Tibao, who fled back to Sandwip. By 1617, Sandwip was seized by Mrauk U; reducing Tibao to his former miserable condition and killing many of its inhabitants. Many Portuguese pirates were also transported to Chittagong as sailors and gunners as Razagyi feared the growing power of the Muslims.