London, December 15 (RHC)-- British resident Shaker Aamer has spoken out about his imprisonment at the U.S. prison in the illegally-occupied Cuban territory of Guantánamo. He was released in October after more than 13 years behind bars.

Aamer had been cleared for release since 2007, but the United States kept him locked up without charge. He says he was subjected to torture, beatings, sleep deprivation and starvation, doused with freezing water and forced to stand for 18 hours at a time.

In a series of interviews, Aamer said a British official was present during one of his beatings. Aamer also condemned extremism, saying any extremists living in the UK should "get the hell out."