The Royal Thai Armed Forces Headquarters has proposed that the National Security Council (NSC) close the Gulf of Thailand to block oil and military supplies to Cambodia amid ongoing hostilities.

An urgent letter from armed forces chiefs, circulated online on Sunday, shows a request for the Defence Ministry to submit an immediate proposal to the NSC to shut the gulf to supplies destined for Cambodia.

According to the proposal, the NSC would order the Thai Maritime Enforcement Command Centre (Thai-MECC) to intercept and block oil and warfare-related supplies carried by all vessels, including commercial ships and fishing boats, departing Thai waters for Cambodia.

Capt Panupan Rakkaew, a coordinator at Thai-MECC, said the centre has already drafted a related order to enforce the supply blockade. He added that the NSC could issue such an order under the Maritime National Interests Protection Act.