The U.S Treasury Department on Wednesday issued new sanctions targeting Iran's nuclear program, just days before senior American and Iranian officials are expected to hold talks in the Middle East sultanate of Oman.

Five entities and one person based in Iran are cited in the new sanctions for their support of Iran's nuclear program. The designated groups include the Atomic Energy Organization of Iran and subordinates Iran Centrifuge Technology Company, Thorium Power Company, Pars Reactors Construction and Development Company and Azarab Industries Co.