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Iran bomb blamed on US and Israel Iran bomb blamed on US and Israel
(about 1 hour later)
Iranian media have blamed Israel and the US for a bomb attack which killed an Iranian nuclear scientist in Tehran. Iranian state media have accused Israel and the US of being involved in a bomb attack which killed an Iranian physicist in Tehran.
State broadcaster Irib said "Zionist and American agents" planted a remotely controlled bomb that killed Professor Masoud Ali Mohammadi near his home. State broadcaster Irib quoted Iran's foreign ministry spokesman as saying there were signs of Israeli and US involvement "in the terrorist act".
Local media described him as a "devoted revolutionary professor". Masoud Ali Mohammadi - described as a "devoted revolutionary professor" - was killed by a remotely-controlled bomb.
It comes at a time of heightened tension in Iran, following June's disputed presidential election and mass protests against the government.
Israel and the US have so far made no comments about Tuesday's blast.Israel and the US have so far made no comments about Tuesday's blast.
Reports in the Iranian media described Mr Mohammadi as a nuclear physicist, but it appears that his field of study may have been quantum theory.
The bomb blast happened at a time of heightened tension in Iran, following June's disputed presidential election and mass protests against the government.
'Arrogant powers''Arrogant powers'
Masoud Ali Mohammadi, a nuclear physics professor at Tehran University, "was killed in a booby-trapped motorbike blast" in the city's northern Qeytariyeh district, state-run Press TV reported earlier. Mr Mohammadi, who worked at Tehran University, "was killed in a booby-trapped motorbike blast" in the city's northern Qeytariyeh district, state-run Press TV reported earlier.
Prof Mohammadi was killed as he was leaving his home, media say Professor Mohammadi was killed as he was leaving his home, media say
It showed pictures from the scene of the blast, saying windows in the nearby buildings were shattered by the force of the explosion. It showed pictures from the scene of the blast, saying windows in the nearby buildings had been shattered by the force of the explosion.
Local media reports say the bomb was attached to a motorcycle parked outside Prof Mohammadi's home, although one agency said it was planted in a rubbish bin. Local media reports say the bomb was attached to a motorcycle parked outside Mr Mohammadi's home, although one agency said it had been planted in a rubbish bin.
Irib later quoted Iran's foreign ministry spokesman as saying that "in the initial investigation, signs of the triangle of wickedness by the Zionist regime, America and their hired agents, are visible in the terrorist act".
Press TV quoted security officials at the scene as saying that the equipment and system of the bomb used in the attack had been related to a number of foreign intelligence agencies, particularly Israel's Mossad.Press TV quoted security officials at the scene as saying that the equipment and system of the bomb used in the attack had been related to a number of foreign intelligence agencies, particularly Israel's Mossad.
In its earlier report, Irib said Prof Mohammadi "was martyred this morning in a terrorist act by anti-revolutionary and arrogant powers' elements". In its earlier report, Irib said Mr Mohammadi "was martyred this morning in a terrorist act by anti-revolutionary and arrogant powers' elements".
The BBC's Tehran correspondent Jon Leyne says Iran usually refers to its enemies in the West as "the arrogant powers".The BBC's Tehran correspondent Jon Leyne says Iran usually refers to its enemies in the West as "the arrogant powers".
The opposition in Iran will fear that Tuesday's blast will be used against it as part of a crackdown, our correspondent adds.
Police sealed off the area and launched an investigation into the incident.Police sealed off the area and launched an investigation into the incident.
No-one has claimed responsibility for the blast and at this stage there could only be speculation for possible motives of the attack, correspondents say. No-one has claimed responsibility for the blast and at this stage there could only be speculation as to possible motives for the attack, correspondents say.
There has been much controversy over Iran's nuclear activities.There has been much controversy over Iran's nuclear activities.
Tehran says its nuclear programme is for peaceful energy purposes, but the US and other Western nations suspect it of seeking to build nuclear weapons.Tehran says its nuclear programme is for peaceful energy purposes, but the US and other Western nations suspect it of seeking to build nuclear weapons.
In December, Tehran accused Saudi Arabia of detaining an Iranian nuclear scientist and handing him over the US. In December, Tehran accused Saudi Arabia of detaining an Iranian nuclear scientist and handing him over to the US.
Saudi Arabia denied the claim.Saudi Arabia denied the claim.
The opposition in Iran will fear that Tuesday's blast will be used against them as part of a crackdown, our correspondent says.
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