UPDATE: 5:40 a.m. ET: The media department at the Presidential Office denied the president came under attack.
POSTED 5:33 a.m. ET: A grenade exploded near the convoy of Iranian President Mahmoud Ahmadinejad during his visit to a western Iranian city on Wednesday, according to a website linked to moderate members of the country's parliament.
Ahmadinejad was unhurt.
The grenade exploded during the president's visit to Hamedan, reported parlemannews.com.