North Korea shocked the world by conducting the test on January 6 amidst global concerns over the country objectives about the timing of the test.

Foreign Office (FO) said in a statement that Pakistan has noted, with deep concern, the reports about the nuclear test.

"We have consistently supported a nuclear weapons free Korean Peninsula as agreed by all parties," it said.

The Foreign Office said Pakistan strongly believes that all countries should comply with their respective international obligations.

The surprise test was personally ordered by North Korean leader Kim Jong-Un and came just two days before his birthday.

If confirmed, the test would mark another big step toward Pyongyang's goal of building a warhead that can be mounted on a missile capable of reaching the US mainland.

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