KEY POINTS
  • Koo Bon-moo passed away on Sunday after a year-long battle with brain disease.
Koo Bon-moo of LG group chairman arrives during the President political scandal parliament hearing at national assembly in Seoul, South Korea.

The chairman of South Korea's LG Group, Koo Bon-moo, instrumental to transforming the country's fourth-largest conglomerate into a global brand, passed away on Sunday after a year-long battle with brain disease.

LG Group said in a statement Koo, 73, had been ill for a year.