The family of a boy who died two years after a bus accident left him comatose committed suicide in grief and left its assets to "traffic accident victims who live like vegetables," police said Wednesday.

Kim Hi-yun, 50, director of a Korea Water Resources Corp. field office, his wife and 22-year-old son were found dead by Kim's chauffeur and sister-in-law Monday in the family's apartment, police said."We have decided to follow our son, Kyu-tak, because our lives have been miserable since he died," police quoted a suicide note left by the family as saying.