Fresh cross-border clashes between Thailand and Cambodia broke out on Sunday hours after US President Donald Trump announced the two Southeast Asian nations had agreed to ceasefire talks.

The talks, announced by a spokesperson for the Thai prime minister's office on Sunday, come after pressure from U.S. President Trump to reach a ceasefire.

Following up on calls by President Trump, Secretary of State Marco Rubio spoke with his counterparts in both countries. But on Sunday morning, skirmishes erupted once more.