Roh Moo-hyun served as South Korea's president from 2003 to 2008
The former president of South Korea, Roh Moo-hyun, who had been under investigation for alleged corruption, has apparently committed suicide.
His former chief of staff said Mr Roh appeared to have jumped to his death from a rock while mountain climbing in the south of the country, and had left a brief suicide note.
Here are a selection of reactions to his death from around the world.
SOUTH KOREAN PRESIDENT LEE MYUNG-BAK
This is a truly unbelievable, lamentable and deeply sad event
KIM DAE-JUNG, FORMER SOUTH KOREAN PRESIDENT
I've lost my life-long companion, with whom I took part in struggles for democracy and shared 10 years of a democratic government... I feel like I've lost a half of myself.
Allegations concerning his family members have been leaked to the press every day. He was probably unable to bear the pressure and tensions any longer. My heart goes out to his family.
JAPANESE PRIME MINISTER TARO ASO
I was quite surprised. I would like to offer my condolences and pray for the repose of his soul.
CAMBODIAN PRIME MINISTER HUN SEN
I don't know how to express my sadness. I express sincere, deep condolences.