Myanmar’s army said on Wednesday that it had captured “seven or eight” outposts of the Kachin Independence Army (KIA) in northern Shan state, accusing the ethnic army of operating improperly in a controlled area during a four-month ceasefire that ends on April 30, RFA reported.

In the first truce ever initiated by the powerful military, known as the Tatmadaw, the army declared a unilateral four-month cease-fire from Dec. 21 to April 30 in Kachin and Shan states.

The KIA outposts taken over by the army after three days of fighting beginning on April 21 were near Mongpaw Village in the Muse district of Northern Shan State, which lies along the border with China’s Yunnan province.