Olivier Vandecasteele, 41, has been in custody since February; family says he is being held hostage as Tehran demands freedom of man jailed in Belgium for terrorism

One human rights campaigner has not seen her 16-year-old twins for seven years

Brawl amid nationwide protests was a result of 'personal differences,' local public prosecutor says

Brussels says man has been in 'illegal' detention since February 24 arrest; prisoner swap with Tehran could see release of convicted terrorist

Ahmedreza Djalali was arrested during visit to Islamic Republic in 2016, with Tehran claiming he helped Mossad in assassination of two nuclear scientists

US Secretary of state says Emad Sharghi, sentenced to 10 years on spying charges, 'has been treated as a political pawn'

Rights watchdog says it is aware of 96 cases since 2010 of inmates dying because they were not given suitable treatment, with true number likely higher

Environmentalist Morad Tahbaz wasn't included in last week's release of 2 UK-Iranian prisoners; family says London authorities attributed their inaction to his being also American

Supporters of Benjamin Briere, 36, say he is being used as a pawn for Tehran as it negotiates nuclear pact with France and other Western powers

Brother of Farideh Moradkhani says the activist is being held in Tehran's notorious Evin Prison