Kpop group Super Junior's Leeteuk loses father, grandparents

South Korean boy band Super Junior performs live on November 30, 2013 in Macau.

SEOUL, Jan. 7 (Yonhap) — Police said Tuesday they were investigating the deaths of the father and grandparents of Leeteuk, a member of the popular K-pop boy band Super Junior.

Their bodies were discovered in their apartment in Shindaebang-dong, southwestern Seoul, at about 9:20 a.m. Monday by a relative.

The 84-year-old grandfather and 79-year-old grandmother were lying in bed covered with a blanket and the father, aged 57, was found hanging from a wardrobe door in his room, police said. The three are presumed to have died at about 11 p.m. Sunday, police added.

Officers found a suicide note at the site believed to be written by the father surnamed Park.

The exact contents of the note are not known, but sources say it read, "I'll take my parents with me."

Park, who formerly was a trader, was suffering from depression, the bereaved family said.

He had cared for his parents, both of whom had been suffering from dementia for years, police said.

Police said they were trying to determine the exact cause of the deaths but believe that Park killed himself after strangling his parents to death.

On Monday night, however, Leeteuk's management company S.M. Entertainment had announced that the singer's father and grandparents were killed in a car accident.