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"Twenty-three Afghans held at the U.S. naval base at Guantanamo Bay for up to two-and-a-half years have been released in Kabul and some have complained of being unfairly detained and treated worse than animals.

The men were among 26 prisoners flown back from Cuba at the weekend having been detained without charge or representation...

"We don't know what our crime was," said one of the former prisoners, Lall Gul, on Tuesday. "They just arrested us and took us to Guantanamo prison."

Some declined to speak to journalists, but others angrily protested their innocence.

A 27-year-old from the southern Helmand province... said prisoners were psychologically and physically tortured. "The treatment was so bad I can't find words to explain it. The psychological torture was worse than the physical."

"There was no respect for our culture and religion -- animals were treated better than us. If we did not follow their orders, they would beat us."