Days after deporting a Korean-American woman for praising the Democratic People's Republic of Korea, authorities in the Republic of Korea arrested a fellow activist and former leftist politician on similar charges on Wednesday.

Both women fell foul of the ROK's strict National Security Law.

Shin Eun-mi, who hosted a number of talks with Hwang Sun across the country from October to December, was expelled on Saturday and barred from re-entering the ROK for five years.