“Despite our repeated warnings, Chinese government ships have entered our territorial waters for three days in a row,” Japanese Chief Cabinet Secretary Osama Fujimura told reporters.
“It is extremely regrettable that, on top of that, an intrusion into our airspace has been committed in this way,” he said, adding that Japan had formally protested through diplomatic channels.
Japan’s military scrambled eight F-15 fighter jets, the Defense Ministry said. Japanese officials later said the Chinese aircraft had left the area.
It was the first time a Chinese aircraft had intruded into Japan’s airspace since 1958 when the Self-Defense Forces started to compile statistics on airspace violations, the Defense Ministry said.