North Korea has reportedly conducted a nuclear test, the intensity of which led to an earthquake of magnitude 5.3 in the nation, a global seismic activity watchdog claimed.

The US Geological Survey claimed on Friday that the earth’s trembling was caused by “an explosion.” No confirmation of earthquake has yet been received from North Korea but it has been observed that whenever an artificial earthquake is felt over there, it is always because of nuclear tests.

Japanese government spokesman has claimed that the earthquake might have been the result of a nuclear test conducted by the nation. Japan’s Chief Cabinet Secretary Yoshihide Suga addressed a news conference and said that Prime Minister Shinzo Abe has asked the relevant ministries to gather and analyze details regarding North Korea and confirm if all reports coming as speculations were true.

Recent satellite imagery and intelligence have shown that there has been an enhanced activity at the Punggye-ri-site. The spot is the same place where North Korea has carried out all its previous nuclear tests, including the fourth one in January.

“We believe it’s possible that North Korea carried out a nuclear test,” Suga said in Tokyo. “The meteorological agency detected seismic waves that are probably not from a natural earthquake.”

The South Korean government has also supported the claims and said that its northern counterpart has conducted the fifth nuclear test, which it described as an imminent step.

Bloomberg stated that Japan’s Defense Ministry was ready to send a plane to collect required data and examine the same to identify if any radioactive materials were present in the North Korea airspace. “We are aware of seismic activity on the Korean Peninsula in the vicinity of a known North Korean nuclear test site,” White House National Security Council spokesman Ned Price said. “We are monitoring and continuing to assess the situation in close coordination with our regional partners.”