Japan warned China Monday about sending fighter jets over a disputed territory that both countries claim in the East China Sea.
On Sunday, China sent warplanes to the skies over the Miyako Strait, east of the Japanese-controlled Senkaku islands, which China also claims and calls the Diaoyu islands. Chinese officials say about 40 aircraft were involved in the maneuver.
The Associated Press reports Japan scrambled at least one fighter jet after the Chinese aircraft flew over the area.
Japan said the aircraft did not violate Japanese airspace, but that it was the first time Chinese fighter jets had flown over the strait.
Japanese Prime Minister Shinzo Abe told parliament Monday Japan would "never tolerate attempts to unilaterally change the status quo" in the disputed waters or "wherever else in the world."
