Thailand said late Saturday it agrees in principle to entering a ceasefire with Cambodia and beginning a "bilateral dialogue" aimed at ending the nations' deadliest fighting in more than a decade.

Thailand and Cambodia fought their bloodiest military clashes in more than a decade, with at least 12 people killed over a disputed border zone.

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

The conflict's death toll rose substantially, with Cambodia reporting 12 new deaths and Thailand one, making the total death toll 13 Cambodians and 20 Thai

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The conflict over the shared border between the two countries grew on Saturday, in the deadliest conflict between them in more than a decade.

Thailand and Cambodia exchanged heavy artillery fire for a second day on Friday as fighting intensified and spread, while Cambodia's leader said Thailand had agreed to a Malaysian ceasefire proposal but then backed down.