Thailand's Ministry of Foreign Affairs announced Thursday that it will hand a letter of protest to Cambodia's government after a call between the two countries was allegedly leaked by a high-profile Cambodian official.

Thailand’s Prime Minister Paetongtarn Shinawatra has apologized for the political turbulence set off by a leaked recording of her negotiations with Cambodia’s former leader in the two nations' latest border dispute.

As pressure grew on Paetongtarn apologised at a news conference alongside military chiefs and senior figures from her Pheu Thai party.