Al Jazeera reports the Committee to Protect Journalists (CPJ) has called on the Iranian government to immediately release four detained journalists, three of whom it said had US-Iranian nationality. Two of the detainees are Jason Rezaian, the Tehran correspondent for the Washington Post, and his wife Yeganeh Salehi, a correspondent for the United Arab Emirates-based newspaper the National, the CPJ said in a statement. Names of the other two detained journalists have not been revealed but the Post said they were freelance photojournalists. Rezaian, 38, has dual US-Iranian nationality and has worked for the Post in Tehran since 2012. The Post reported that Salehi "has applied for U.S. permanent residency". U.S. State Department deputy spokeswoman Marie Harf said Washington was aware of the reports of the detention of three U.S. citizens in Iran. "We are not able to comment further at this time due to privacy considerations. Our highest priority is the safety and welfare of U.S. citizens abroad," she said.