Check-in screens at Vietnam's two major airports were hacked Friday to contain distorted information about the South China Sea and insult Vietnam and the Philippines, state media reported.

The sound systems at Noi Bai and Tan Son Nhat airports in Hanoi and Ho Chi Minh City respectively were also affected, forcing airport authorities to switch off the check-in screen and sound system, the online VnExpress said.

The website of the national carrier, Vietnam Airlines, was also briefly hacked, it said.

The paper quoted Vice Minister of Transport Nguyen Nhat as saying the incidents did not affect the security or air traffic control at the airports.

Earlier this month, an international tribunal issued a ruling in favor of the Philippines that invalidated China's sweeping claims in the South China Sea. Vietnam also has overlapping claims to parts of the sea, which is rich in natural resources.