South Korea warned UN that its communist neighbour has 'thousands of tonnes of chemical weapons'.
Kim Jong-un's half-brother was poisoned at Kuala Lumpur airport with a highly toxic VX nerve agent.
South Korea's intelligence services claim North Korea officials were punished for making 'false reports'.
The corruption scandal involving President Park broke out in 2016 and led to weekly protests by Koreans.
This comes after South Korean presidential candidate Lee Jae-myung proposed an organisation similar to WikiLeaks.
The state has carried out assassinations, public executions and overseas kidnappings.
Estranged for years from his relatives, the 45-year-old gambler and playboy Kim Jong-nam played a key role in the dynasty that has ruled for three generations since North Korea's foundation in 1948.
The unidentified suspect appears to be a middle-aged woman of Asian descent.
The statement came from South Korean Finance Minister Yoo Il-ho amid reports of alleged retaliatory actions from Beijing.
The manufacturers of lithium-ion batteries would now have to go through greater oversight and inspections.
Blue House officials said they would provide all documents to the prosecutors, but would not allow them in.
Pentagon chief James Mattis set to discuss Thaad deployment with top South Korean lawmakers.
Seoul has denied all 'abduction' accusations saying the women defected of their own free will.
Seoul's defence minister says Pyongyang's missile threats are 'direct and realistic'.
Former British deputy ambassador, Thae Yong Ho, believes dissenting voices are becoming more common.
Mattis was sworn into the top job at Pentagon shortly after Donald Trump's inauguration.
Park was impeached after being implicated in a corruption scandal involving her aide Choi Soon-sil.
A ruling to unseat or reinstate Park requires the approval of six out of the court's nine justices.
"We have waited very long and worked very hard to launch Pokémon Go in South Korea," Lim Jae Boem said.
Cho Yoon-sun is the first sitting minister to be arrested amid the political scandal probe.
Prosecutors are also preparing to extradite Ban Ki-sang on charges of bribery.
Tokyo says the references are against the Olympic charter that opposes the use of sports for political purposes.