Iran has said it has reached an understanding with the US on the main "guiding principles" to resolve their dispute over Tehran's nuclear programme, BBC reported. 

Speaking after indirect talks in Geneva, Iranian Foreign Minister Abbas Araghchi added that work still needed to be done. The US said "progress was made".

Badr Albusaidi, foreign minister of mediator Oman, said the negotiations "concluded with good progress towards identifying common goals and relevant technical issues".