One of South Korea’s most prolific mass murderers has killed himself while on death row.

The Justice Ministry said Jeong Nam-kyu died in hospital on Sunday – a day after being found hanging in his cell.

In 2007, the 40-year-old was convicted of murdering 13 people and robbing, raping and assaulting 20 others during a two year spree.

In a statement, the ministry said Jeong is thought to have died from a heart attack or brain injuries resulting from what is believed to be his suicide attempt…

He is believed to have left a note indicating he was worried about his execution, the Associated Press news agency reported…

Bye. Save the country the expense.