Many experts are already skeptical of North Korea's claims of a successful hydrogen bomb test
The announcement came hours after South Korean officials reported an "artificial earthquake" 30 miles north of Kilju, where North Korea's primary nuclear test site is located.
The US Geological Survey measured the magnitude of the quake as 5.1, the same magnitude reported after North Korea's last confirmed nuclear test in February 2013.
Despite North Korea's announcement, many geopolitical experts remained skeptical of the claims of successful hydrogen-bomb test, undoubtedly due to North Korean state media's tendency to exaggerate or outright lie about happenings in the isolated nation.
Here are just a few: