North Korea leader Kim Jong Un had one of his ex-girlfriends -- along with 11 others -- executed earlier this month, Breaking Celebrity News has learned.

Fox News, citing South Korea's Chosun Ilbo newspaper, is reporting that the leader had the woman, a singer named Hyon Song-wol, arrested with the other people Aug.17 for violations tied to pornography laws.

The executions took place via a firing squad of machine guns -- and with the victims' families looking on — Aug. 20, the paper reported.