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.

Both countries' foreign ministers agreed that no other country should be involved in the issue, Mohamad Hasan said.

The two nations have been locked in a decades-long conflict over their contested border. Tensions in disputed territories soured earlier this year.