Thailand and Cambodia are amassing armor and heavy artillery along their common border raising fears that a long-running territorial dispute could escalate into a full-scale war, local media reported on Monday.

A fragile cease-fire between the two Southeast Asian states was broken on Friday when the sides exchanged artillery, rocket and rifle fire. By Monday at least 12 soldiers on both sides were reported to have been killed and dozens more wounded.

Read more: RIA Novosti