Crackdown on dissent in Iran widens with arrests of reformists.

Iranian security forces have reportedly arrested at least four reformist figures after nationwide protests, and detained Nobel laureate Narges Mohammadi has been given an additional prison sentence of more than seven years, officials and media reported.

Iranian security forces have reportedly begun a campaign to detain figures linked to the country's reformist movement, according to media and official statements. The arrests were reported after nationwide protests earlier this year. Prosecutors in Tehran said several people were arrested and others were summoned to meet authorities. Reports also say detained Nobel laureate Narges Mohammadi received an additional prison sentence of over seven years. Known details: - At least four reformist figures were reported arrested, with names in media reports including Azar Mansouri, Mohsen Aminzadeh and Ebrahim Asgharzadeh. - Prosecutors in Tehran said other individuals have been summoned to meet authorities and accused some of organising activities aimed at disrupting the political situation. - Narges Mohammadi, already detained, was reported to have received another prison term of more than seven years. - The reported detentions followed nationwide protests and coincided with renewed international talks over Iran's nuclear programme. Summary: The reported detentions indicate authorities are widening action against reformist figures. Prosecutors have summoned additional individuals to meet with authorities. Undetermined at this time.