Tens of thousands of people gathered in Cambodia’s capital Phnom Penh on Wednesday for a march to show their solidarity with the government and military, amid soaring tensions with neighboring Thailand following a border row that erupted last month.

The reescalation of conflict was sparked on May 28, when a Cambodian soldier was killed in an early morning clash between both nations’ troops, in an area called the Emerald Triangle—the shared border between Thailand, Cambodia, and Laos. The area remains disputed as both Thailand and Cambodia lay claims to parts of the region.

Officials from Cambodia and Thailand met in Phnom Penh on June 14 to discuss their conflicting territorial claims. This comes after a recent rise in Officials from Cambodia and Thailand met in Phnom Penh on June 14 to discuss their conflicting territorial claims.