The official Islamic Republic News Agency says Iran's Revolutionary Guard has arrested 16 people on allegations they provided material to antigovernment websites.
The report quoted Ahmad Ghorbani, a prosecutor in Kerman in southeast Iran, as saying the 16 are facing charges of cooperating with Western and anti-Iran news networks.
The 16 were not identified.
The report said authorities believe some of them attended training sessions in Turkey and Malaysia.
Elsewhere, a report said Iran's morality police arrested Amir Tataloo, a popular underground singer whose songs authorities consider to be inappropriate.
The “Etemad” newspaper quoted a morality police official, Masoud Zahedian, as saying: “Underground musicians must halt their activities and channel their work through legal frameworks.”
Based on reporting by AP and AFP