Around 200,000 women were enslaved by the Japanese military from the early 1930s to the end of WWII.
Earlier this week the country had confirmed the first case of the disease in 15 years.
Japan's PM Shinzo Abe condemns North Korea's 'reckless and unforgivable' act.
A South Korean official has warned reprisal killings are likely responses to the defection.
North Korea's official news agency says Thae Yong-ho faced criminal charges.
24-year-old Spurs forward 'didn't even eat' after 1-0 defeat to Honduras.
Thae Yong Ho has arrived in Seoul with his family, according to government sources.
The North has started a massive promotion campaign and has termed dog meat as a 'superfood'.
Comfort women were forced into sexual slavery by Japanese military before and during the Second World War.
South Korea take on Honduras in the third quarter-final game of the Rio Olympics men's football event.
The development follows Russia fining Google $6.75m on Thursday for violating Android antitrust rules on mobile devices.
Eight teams will fight against each other for gold in the men's football event.
Mexico play South Korea in the Rio 2016 Olympics on Wednesday, 10 August.
Rare show of unity praised as capturing the Olympic spirit of friendship.
Germany and South Korea are facing each other for the first time at the Olympics.
South Korea begin quest for second straight Olympic medal in the men's football event in Salvador.
UN's most powerful body stops short of formally condemning Pyongyang's defiant act.
South Korea reiterates the need for Thaad deployment after Pyongyang's latest acts.
North Korea previously fired three ballistic missiles into the sea two weeks ago.
'Happy Dying' invites participants to take part in their own pretend funeral.
South Korea's car market, dominated by Hyundai and its affiliate Kia, is relatively small for VW.
Close to 100 family members and 80 government officials were reportedly forced to watch the executions.