The Taliban said Wednesday that efforts to free a British couple from an Afghan prison are not yet complete and denied that their rights were being violated despite concerns from their families and U.N. officials. Peter and Barbie Reynolds, who are in their 70s, were arrested in early February after being taken from their home in central Bamiyan province to the capital, Kabul. U.N. human rights experts on Monday called for the couple’s release, warning their physical and mental health was deteriorating rapidly and that they were at risk of irreparable harm or even death.