Teheran denies assassination attempt on President Mahmoud Ahmedinejad

A conservative Iranian website had reported that a hand greande was thrown at his convoy in the western city of Hamedan, where he was to deliver a speech.

But Iranian state-run Press TV reported later that "no such attack had happened", and officials claimed the confusion had been caused by an exploding firework.

The Iranian President went ahead with his speech at a football stadium.

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"It was a firecracker, and a statement will be released soon," an official in the president's media office was quoted as saying.

Iranian Al-Alam TV claimed that the firecracker had been set off “to cheer” the President.

Earlier, a source in his office had claimed his convoy had been targeted as he was travelling from the airport.

Dubai-based Al Arabiya television had reported that the attacker had thrown an explosive device at a car carrying journalists. The attacker was detained, it had added.

Other Arab TV reports had claimed that a number of people had been wounded in the attack.