Thailand says it has bombed a "logistics centre" near the Cambodian town of Poipet, known for being a major casino hub and the biggest land crossing between the two countries.
The bombings come as renewed border clashes show no sign of abating.
Cambodia's defence ministry said Thai forces dropped two bombs, while the Thai side said that they targeted a facility storing rocket systems.
The renewed fighting this month has killed at least 21 people in Thailand and 17 in Cambodia, while displacing around 800,000, officials say.
In a statement, the Cambodian defence ministry said Thai forces dropped two bombs in the area of Poipet municipality at around 11:00 am (0400 GMT) Thursday.
