Japan PM vows ‘resolute’ response after Chinese aircraft accused of locking radar on to Japanese fighter jets

China's ambassador summoned over alleged weekend incident that saw Chinese J-15 fighter aircraft twice train their radar on Japanese F-15s

The diplomatic dispute between Japan and China appeared to deepen over the weekend after Chinese military planes were accused of locking their radar on to Japanese fighter jets near the Okinawa islands.

Japan's prime minister, Sanae Takaichi, vowed to respond calmly and resolutely" to the alleged incident, saying her country would take all possible measures to strengthen maritime and airspace surveillance and closely monitor Chinese military activities. The country's foreign ministry also summoned China's ambassador on Sunday. China's government has roundly rejected Japan's accusations, instead lodging its own counterprotests.