South Korea Confirms 'Sign' North Korea Making Nuclear Test Preparations

North Korea could be preparing to conduct a fourth nuclear test, following signs of activity at the country's main testing site, South Korea's unification minister, Ryoo Kihl-jae, said on Monday.

Ryoo told a meeting with MPs at the national assembly that Seoul had acquired evidence of increased movement of vehicles and personnel at Punggye-ri, the Yonhap news agency said.

The site on North Korea's north-east coast is where the country's three previous controlled nuclear detonations – in 2006, 2009 and on 12 February this year – took place

This is getting serious huh!