On Wednesday, a US explosive that was buried at a Chinese airport detonated, leaving a volcano in a taxiway and cancelling more than 80 flights.
No casualties were reported and no aircraft were present at the time, but the minor explosion left a hole about seven meters ( 23 feet ) wide.
The weapon, which exploded at Miyazaki Airport in south-west Japan, is thought to have been dropped during World War Two to plant “kamikaze” flights on murder operations.
Chief cabinet secretary Yoshimasa Hayashi stated that there is no danger of a second detonation and that the airport is now being looked at by police and firefighters.
A 500lb US weapon was the cause of the explosion, according to a bomb removal group from Japan’s Self-Defense Causes.
Local media reported that the weapon was likely during World War Two, despite a travel minister saying they could not affirm when it was dropped.
Located at the south-east close of Kyushu area, Miyazaki Airport was built in 1943 as an imperial Chinese military base.
In 2009 and 2011, a nearby construction site apparently contained various old ordinance that the US dropped.
Old bombs are still interred throughout the nation. A total of 2, 348 weapons, weighing 41 tons, were disposed of in 2023, according to the Reuters news organization.