An Iranian physicist was shot dead by a motorcyclist in Tehran on Saturday and Iran's student news agency ISNA quoted an unnamed police official as saying the man was a nuclear scientist.
ISNA named the scientist as Darioush Rezaie, 35, a university teacher who held a PhD in physics. It was not clear whether he was part of Iran's nuclear enrichment program. Enriched uranium can be used for civilian nuclear purposes, but also to build atomic bombs.
"An Iranian nuclear scientist was assassinated in front of his house today ... and his wife was also wounded," it said. "He was shot dead by a motorcyclist."
Deputy Interior Minister Safarali Baratlou said it was not clear whether Rezaie was a nuclear scientist, Iran's Labor News Agency ILNA reported. "Police investigations are continuing ... Nobody has been arrested so far," Baratlou told ILNA.
The state news agency IRNA also reported the assassination but gave different details. Officials were not available for comment. There was no immediate claim of responsibility. Several nuclear scientists have been assassinated in Iran in the past few years, and in November one Iranian scientist was killed and one was wounded in Tehran.
Iranian officials and media have blamed Israel, which Tehran calls "the Zionist regime," and the United States for the killings.
