One of the most powerful ethnic minority armed groups battling Myanmar’s army has claimed the capture of the last army outpost in the strategic western town of Maungdaw, gaining full control of the 271-kilometer (168-mile) -long border with Bangladesh.

The capture by the Arakan Army makes the group’s control of the northern part of Rakhine state complete, and marks another advance in its bid for self-rule there. ICC prosecutor requests arrest warrant for the head of Myanmar's military regime

Rakhine has become a focal point for Myanmar’s nationwide civil war, in which pro-democracy guerrillas and ethnic minority armed forces seeking autonomy battle the country’s military rulers, who took power in 2021 after the army ousted the elected government of Aung San Suu Kyi.

Khaing Thukha, a spokesperson for the Arakan Army, told The Associated Press by text message from an undisclosed location late Monday that his group had seized the last remaining military outpost in Maungdaw on Sunday. Outpost commander Brig. Gen. Thurein Tun, was captured while attempting to flee the battle, Khaing Thukha said.

The situation in Maungdaw could not be independently confirmed, with access to the internet and mobile phone services in the area mostly cut off. Myanmar’s military government did not immediately comment.

Maungdaw, about 400 kilometers (250 miles) southwest of Mandalay, Myanmar’s second-largest city, has been the target of an Arakan Army offensive since June. The group captured Paletwa and Buthidaung, two other towns on the border with Bangladesh, earlier this year.

Since November 2023, the Arakan Army has gained control of 11 of Rakhine’s 17 townships, along with one in neighboring Chin state.

Ann, a town in Rakhine that hosts the strategically important military headquarters overseeing the western part of the country, appears to be on the verge of falling entirely to the Arakan Army.

The group posted on the Telegram messaging app late Friday that it had taken more than 30 military outposts, except the army’s western command, which controls Rakhine and the southern part of neighboring Chin state, as well as the country’s territorial waters in the Bay of Bengal.