Reports are have it 5 persons have died in heated protests said to be concerning wage earnings of garment workers. Land rights campaigning is in the mix, especially about development of Boeung Kak Lake located in northern Phnom Penh, the city where protesting action seems to be the most intense.
Source and full story: <http://www.globalpost.com/dispatch/news/regions/asia-pacific/south-korea/140107/globalpost-exclusive-south-korea-boasts-role-c> At the source of story webpage, there is content that discusses the position of South Korea respective to the situation.