PUTRAJAYA, Malaysia (AP) — Thailand and Cambodia have agreed to an “immediate and unconditional” ceasefire in a significant breakthrough to resolve deadly border clashes that entered a fifth day, Malaysian Prime Minister Anwar Ibrahim said Monday.

Cambodia and Thailand have agreed to an “immediate and unconditional ceasefire” beginning at midnight local time (1 p.m. ET Monday), following days of clashes across the two countries’ disputed border.