GENEVA (Reuters) - An inmate at the U.S. detention facility at Guantanamo Bay is still being tortured, the U.N. special rapporteur on torture Nils Melzer said in a statement on Wednesday.

FILE PHOTO - Chain link fence and concertina wire surrounds a deserted guard tower within Joint Task Force Guantanamo's Camp Delta at the U.S. Naval Base in Guantanamo Bay, Cuba March 21, 2016. REUTERS/Lucas Jackson/File Photo

Former President Barack Obama ended the use of “enhanced interrogation techniques” via executive order in January 2009, but Melzer said the historic use of torture in CIA custody had not yet led to prosecutions or compensation for victims.