An Iranian nuclear scientist has been killed after a bomb attack on his car in northern Tehran.
State news agency Fars named the victim as 32-year-old Ahmadi Roshan, who worked at the Natanz enrichment facility.
He was also a professor at Tehran’s technical university.
The attack happened early on Wednesday morning.
Eyewitnesses said an unidentified motorcyclist placed a magnetic bomb on Roshan’s vehicle before detonating the device.
The capital’s deputy governor blamed the killing on Israel and branded the bombing a ‘terrorist attack’.
A report by the International Atomic Energy Agency published in November suggested that Iran may be building nuclear weapons.
Tehran has repeatedly dismissed Western accusations that its nuclear programme is for military purposes.
The United States recently slapped new financial sanctions on Iran, while the European Union is set to finalise an oil embargo by the end of the month.