The eldest sister of Samsung Electronics chairman Lee Kun-hee has joined that exec's brother in filing suit against him over an inheritance from their father.
Lee Sook-hee has filed suit with the Seoul Central District Court, claiming that her father left shares in Samsung Life Insurance and Samsung Electronics for all of his children to inherit, not just Lee Kun-hee, Korean news agency Yonhap reported.
The chairman's brother, Lee Maeng-hee, is also suing over their father's inheritance, claiming that Kun-hee incorporated 8.24 million shares in Samsung Life Insurance and 20 stocks in Samsung Electronics left in a trust into his own stockholdings after his father's death.
The chairman's brother wants the court to order the chairman to return the Samsung Life shares, worth around 716 billion won ($636m, £404m), the stocks in Samsung Electronics, and 100 million won ($88,800, £56,427).
Their sister is demanding 2.23 million shares in Samsung Life Insurance and 10 preferred stocks in Samsung Electronics from the chairman.
Lee Kun-hee was once chairman of the whole Samsung group of companies, after inheriting the bulk of it after the death of his father in 1987.
After being convicted of a number of illegal financial dealings, he was removed as chairman in 2007, but was subsequently pardoned and returned to Samsung to chair the electronics business.
When news of his brother Lee Maeng-hee's suit broke two weeks ago, Samsung said the issue had nothing to do with the firm.
"This is a civil suit and therefore the company has no official comment," Samsung said in an emailed statement. ®