He takes poison before he can be questioned on the reasons for his escape, a North Korean source says.
Sources say Mongolia will comply with UN resolutions to avoid driving away foreign investment.
Dash through fog marks the 15th North Korea this year to defect directly to the south across the land border or by sea.
Pressure to earn foreign currency for Pyongyang drives the market in banned wildlife products.
The move reflects growing tensions, as China joins in with international sanctions trying to pressure Pyongyang.
Countries in region are committed to upholding U.N. Security Council resolutions, senior American diplomat says.
Move is seen as an effort to make it easier to import or smuggle goods from China as sanctions bite.
Top American diplomat says US open “to talk anytime” North wants, but White House says time not ripe.
Thefts of devices holding sensitive information prompt the government order, issued in September.
Finding life difficult in South Korea, they go back to North Korea and identify others with contacts in the South.
Angered by reports of wrongdoing, Kim Jong Un cracks down on wealthy North Koreans with ties to government officials.
They work out of newly opened 'branches' of state-linked firms in an effort to increase trade volume in the sanctions-hit country.
But some observers say the trajectory of the launch was crafted to avoid a military provocation.
Washington adds pressure a day after Pyongyang was put back on a blacklist of state terrorism sponsors.
Andrei Lankov sees little direct impact on North Korea from latest U.S. move -- unless China starts fully enforcing sanctions.
Move is seen as a way to increase pressure on North Korea to help the U.S. and it allies address Pyongyang's nuclear ambitions.
Birth control is restricted in order to produce more 'socialist workers' in the politically isolated country.
The U.S., meanwhile, designates North Korea as state-sponsor of terrorism.
Tobacco products, some produced in joint ventures with Chinese firms, are smuggled and sold across Asia, sources say.
Garlic, chili peppers, and other staples are bought cheaply in China and sold for higher prices at home.
They risk torture and abuse if sent back, the father who fled North Korea ahead of his family two years ago says.
Investigator admits North Korean suspect’s clothing was not subjected to chemical analysis.
They harvest radish leaves and sweet potato stems for re-export to South Korea by way of China, sources say.
Motive in killing was “more political than anything else,” defense attorneys say.
New system, aimed at combating waste from inaccurate pricing, is to be applied in other cities
For first time, witness identifies four male suspects as North Koreans.
Pyongyang dodges UN sanctions by declaring that coal and other goods come from Russia and China, sources say.
Traders are left hanging in the wind by cash-strapped state-owned firms in North Korea.
Nation reviewing ties with Pyongyang, Najib Razak tells parliament.
But the cost of tiling a private home is enough to feed a family of four for five months.