North Korea claimed it had tested a “standardized” nuclear weapon to be mounted on ballistic rockets, during an announcement on Korean Central Television (KCTV) on Friday.

On the same day, an artificial earthquake with a magnitude likely over 5.0 on the Richter Scale was detected near the DPRK’s Punggye-ri testing site. The nuclear test is the second to take place in 2016.

“As the nuclear warhead was standardized, we can now produce a variety of nuclear warheads with high striking power as much as we want and need,” the KCTV announcement said.

The test was conducted to check the power of