A deadly military clash along Thailand and Cambodia's shared border is escalating, with airstrikes carried out by the Thai army.

Thailand and Cambodia exchanged fire along their disputed border for a second day on Friday, officials from both countries said, with more than a dozen people reported killed and more than 135,000 civilians evacuated.

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

BANGKOK -- Armed clashes have broken out between Thailand and Cambodia in long-disputed border areas, rapidly escalating months-long tensions.

Armed clashes on the remote, disputed border between Cambodia and Thailand killed at least 12 people on Thursday, in a dramatic escalation of tensions that threatens to erupt into a broader conflict.

Thailand launched air strikes on Cambodian military targets on Thursday as Cambodia fired rockets and artillery, killing at least 11 civilians, in a dramatic escalation of a long-running border row between the two neighbours.