The Acehnese sultan, Iskandar Muda, was determined to destroy the port; his determination to destroy the Portuguese hegemony grew year after year, and with the trade incomes, he managed to enlarge his navy alongside the victories he made on other ports such as Johor and Pahang.

[1] The Kedahnese Sultan, Sulaiman Shah II, built a fort called Kuala Kedah with the assistance of the Portuguese.

The rectangular-shaped fort served as a trading factory by the Portuguese rather than a military outpost, which certainly became a target for the Acehnese.

[2] With an armada of 50 Galleys,[3] the Acehnese attacked Kedah, destroyed the Kota Kuala fort,[4] and began cutting down all the pepper vines, killing the cattle, and ravaging everything in their way.

[5] The Acehnese destroyed all the fruit trees, killed the surviving cattle, burnt the city, and took 7,000 prisoners to Aceh.