The international human rights organisation Amnesty International says North Korea is sending an increasing number of people to political prison camps. The organisation said around 200,000 prisoners are tortured and starved in the North Korean camps, but the government in Pyongyang denies they exist. Amnesty has urged the secretive state to immediately close all the camps. It also calls on Pyongyang to publicly admit the existence of the camps. The North Korean government has not publicly commented on the report's findings.