U.N. rights chief seeks international investigation on North Korea
She voiced regret that there had been no improvement since Kim Jong-un took power a year ago.
Pillay, in a rare statement on North Korea, said: "Because of the enduring gravity of the situation, I believe an in-depth inquiry into one of the worst - but least understood and reported - human rights situations in the world is not only fully justified, but long overdue."
(Reporting by Stephanie Nebehay; Editing by Janet Lawrence)