Thailand has accused Cambodia of violating a ceasefire just hours after it began, following five days of deadly border clashes that left at least 33 dead and displaced thousands, BBC reported.

Thailand says it halted fire at midnight but continued receiving gunfire from the Cambodian side. Cambodia denies any violations, claiming no clashes have occurred since the truce.

Tensions had flared over a long-standing border dispute, escalating into violence last week. A planned meeting between commanders has been delayed, raising doubts over the truce’s stability, according to BBC.

The ceasefire was brokered in Malaysia, with both sides agreeing to pull back troops and allow independent monitoring. It followed US pressure on Thailand to end the conflict or risk trade talks.