The Los Angeles Times reports:
Two separate explosions killed a nuclear scientist and injured another in the Iranian capital Monday morning, official news outlets reported.
Both scholars' wives and a driver were also injured in the attacks, according to the news agencies. The slain scientist, Majid Shahriari, was a member of the nuclear engineering team at the Shahid Behesti university in Tehran, according to the official Islamic Republic News Agency, or IRNA.
No one claimed responsibility for the attacks and no arrests have been made, Iranian officials said. But they prompted a stern warning by the normally cool-headed head of Iran's atomic energy agency, Ali Akbar Salehi, who described Shahriari as a former student.
The Iranians, according to the Islamic Republic News Agency, are blaiming the "Zionist regime."