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.

The leaders of Cambodia and Thailand agreed to a ceasefire in a bid to bring an end to their deadliest conflict in more than a decade.

Thailand and Cambodia have agreed to an unconditional ceasefire that will start at midnight tonight after a five-day conflict.