Tehran University professor dies in car bomb plot.

According Fars news agency, Mostafa Ahmadi Roshan, 32, supervised a department at Natanz uranium enrichment facility in Isfahan province.

Witnesses were quoted as saying that a motorcyclist stuck a magnetic bomb on the side of the car which then exploded, killing one and wounding two people inside. Fars identified the victim as Mostafa Ahmadi-Roshan.

Deputy Governor Safarali Baratloo blamed Israel for the bombing, saying it was similar to ones targeting nuclear scientists a year ago.

"The bomb was a magnetic one and the same as the ones previously used for the assassination of the scientists, and is the work of the Zionists [Israelis]" Fars quoted Baratloo as saying.

The attack coincided with the second anniversary of an explosion that killed senior Iranian nuclear scientist Majid Shahriari.

Several Iranian nuclear scientists have been assassinated in recent years. Tehran has blamed the killings on Israel and the US. Both countries deny the accusations.