The Philippines on Wednesday reported what it said were incursions into its exclusive economic zone (EEZ) by 287 maritime militia vessels from China, in a further sign of cracks reappearing in a relationship after a period of rapprochement.

"This incident along with continued illegal incursions of foreign vessels sighted near Philippine-held islands have been submitted to relevant agencies for the possible diplomatic actions," the task force on the South China Sea said in a statement.

The Philippine foreign ministry has repeatedly complained to China in recent weeks about a...