Did North Korea just test another nuclear bomb? Here's what you need to know.

North Korea taunted the world on Saturday with claims they had developed a new nuclear weapon. Dictator Kim Jong-un claimed his military could make the bomb in high volumes. The Korean Central News Agency even released a picture showing Jong-un inspecting the bomb with military advisers.

6th successful test

Just hours later, Jong-un's regime announced they had completed the country's sixth successful nuclear weapons test. The weapon was reported to be a hydrogen bomb.

CNN reported: "The test was a 'perfect success' and the final step in attaining a 'state nuclear force,' long-time news anchor Ri Chun Hee said in a televised announcement Sunday."

North Korea's news agency also reported that the bomb was designed to be fitted onto an intercontinental ballistic missile. The communist regime has been testing ICBMs for months.

The last reported nuclear test in North Korea happened last September. The country has tested nuclear weapons successfully five previous times since 2006.

Artificial earthquake

It's likely impossible to know for certain if North Korea actually detonated a hydrogen bomb, but meteorological agencies in the region, including the U.S. Geological Survey, detected strong artificial earthquakes, giving credence to the possibility of a nuclear detonation.

The USGS initially detected a 5.2 magnitude tremor but later upgraded the event to a 6.3 magnitude earthquake, the Washington Examiner reported.

"Possible explosion, located near the site where North Korea has detonated nuclear explosions in the past. If this event was an explosion, the USGS National Earthquake Information Center cannot determine its type, whether nuclear or any other possible type," the USGS said in a statement, according to the Examiner.

Meanwhile, Japan's Meteorological Agency measured the quake at a 6.1 magnitude while South Korea said the quake was a 5.6.

Extremely powerful

The bomb's blast was the most powerful in North Korea's history.

CNN reported:

NORSAR, an independent seismic monitor, estimated the blast created a yield of about 120 kilotons. The tremors caused by North Korea's Sunday test were at least 10 times more powerful than the fifth test, Japanese officials said. An official at the Korea Meteorological Administration estimated the blast was about 50 kilotons.

Follows aggression

The move comes after weeks of aggression from North Korea toward the U.S. and its allies. The regime has been repeatedly warned to halt its development of ICBMs and nuclear bombs, but Jong-un has not relented.

North Korea even made the mistake of firing a missile over Japan last week, which resulted in a strong response from the U.S. military, including flying fighter jets over the Korean Peninsula in a show of force.