Iran arrests nuclear negotiator suspected of spying

Iran has arrested a member of the team that negotiated a landmark nuclear deal with world powers on suspicion of spying, a judiciary spokesman said on Sunday.

The suspect was released on bail after a few days in jail but is still under investigation, Gholamhossein Mohseni Ejei said at a regular weekly news conference, calling the unidentified individual a "spy who had infiltrated the nuclear team," state media reported.

The deal that President Hassan Rouhani struck last year has given Iran relief from most international sanctions in return for curbing its nuclear programme, but it is opposed by hardliners who see it as a capitulation to the United States.