By Lee Jong-hyunA photo posted on Wednesday, April 23, 2018, by a Korean journalist who worked with Jeon Jungkook, a police commander in Seoul, shows Jeon, who is a member of the Korean People’s Army, wearing a red-and-white uniform, carrying a rifle.
A photo of the same policeman taken in 2015 by the Seoul Metropolitan Police Department, shows him wearing a black suit and white shirt.
Jeon is a former chief of the South Korean National Intelligence Service, a government body that has been investigating the North Korean government since the late 1990s.
He is currently serving his fifth prison term.
The South Korean government has called on other South Korean officials to step down or be suspended from their posts following the revelation of the photos.
Joon, a retired police officer, was the deputy commander of a North Korean-controlled police force in the North’s border city of Kaesong in 2012 when he oversaw the arrest of a group of defectors from the North who were allegedly planning to travel to China to participate in a joint underground operation to assassinate Kim Jong-il.
Jee-hyung Kim was a police officer in Seoul before defecting to North Korea, where he became a major spy and spy-training officer.
The Associated Press contributed to this report.