UNITED NEWS INTERNATIONAL (UNI) — Some Filipinos have expressed outrage on social media over banners that labeled the Philippines a “province of China.”

The big and red banners mysteriously appeared on Thursday, July 12 and were placed in at least five public locations in Manila.

Coincidentally, that day marked the second year anniversary of The Hague’s landmark ruling on the South China Sea that favored the Philippines.

Pictures of the banners circulated fast on social media garnering angry comments from Filipinos before the banners were taken down.

Police are trying to find out who was behind the stunt.

Presidential Spokesman Harry Roque, meanwhile, called it “absurd,” and accused those opposing the government as the ones behind it.

The Hague arbitration court in July 2016 invalidated China’s 9-dash claims in the South China Sea.

The current administration, however, has set it aside as it tries to lure in investments from the Chinese.