The reporters are reportedly accused of cooperating with "anti-revolutionary" Persian-language media organizations based outside of Iran.
Iran has renewed its crackdown on the press less than five months before the country’s June 14 presidential vote.
World Jewish groups have denounced plans by Argentina and Iran to form a commission to investigate the deadly 1994 bombing of a Buenos Aires Jewish community center.
Global powers have asked Iran to meet in February to discuss its nuclear program.
A statement issued by the Iranian Defense Ministry's aerospace department on January 28 said that Iran had "successfully launched a capsule, code-named Pishgam ("Pioneer"), that contained a monkey."
Russia is calling on global powers and Iran to stop arguing and agree on a venue for talks on Tehran's nuclear program.
The U.S. State Department has confirmed that Iranian authorities have sentenced an American Christian pastor of Iranian origin to eight years in prison.
“Argo,” the Hollywood thriller about U.S. hostages held in Iran, has won the top prize at the Screen Actors Guild Awards in Los Angeles.
Iran has repeatedly denied any involvement in the attack and has refused to permit Iranian suspects to be questioned.
The raids are described as the largest operation targeting relatively independent Iranian media outlets since 2009.
A U.S. rights group says an Iranian-American Christian priest was sentenced on January 27 to eight years in jail for his religious activities.
Iran has formally banned all oil and gas exports to the European Union, an official said on January 27.