Nothing to worry about then right?
Via Sputnik News:
According to a Kyodo news agency report, the RC 135V reconnaissance plane took off from the Kadena airbase at 10:30 a.m. local time. Ten minutes later seismic stations registered underground tremors in North Korea apparently caused by a nuclear explosion.
The North Korean authorities later announced a successful test of what they described as a ‘miniaturized hydrogen bomb.”
The RC 135V returned to base six hours later, Kyodo reported, adding that the spy plane had apparently been keeping an eye on North Korean territory.
Earlier reports said that Pyongyang had not informed other countries about its scheduled nuclear test.
A US reconnaissance plane was on a similar reconnaissance mission along the North Korean border when Pyongyang carried out a nuclear test in 2013.