In a first, fighter jets in Japan fired flares at a Russian reconnaissance aircraft as a warning after it allegedly breached the nation’s airspace multiple times, according to Tokyo’s Defense Ministry.

Japanese fighter jets fired warnings flares against a Russian military aircraft that Tokyo said repeatedly entered the country’s territorial airspace, in an unprecedented move against a foreign plane.

Japanese jet fighters fired warning flares at a Russian military reconnaissance plane that violated Japan’s airspace, the first time Tokyo has taken such an aggressive stance against incursions of its airspace.