Cambodia's government on Tuesday accused Thailand of escalating border tensions by imposing new restrictions that have blocked almost all land crossings, especially for tourists heading into Cambodia.

Phnom Penh halted fuel imports from Thailand on Monday, with former leader Hun Sen claiming a trading halt would hurt PTT more than Cambodia.

Dozens of tourists and workers, some carrying children, were left stranded on Tuesdayat Thailand's main land crossing with Cambodia, after the army stopped almost all border traffic in an escalating territorial dispute.