The U.S. will study intelligence data and information from open sources to gain an understanding into controversial media reports about an assassination attempt on the Iranian president, the Department of State said. "We will use the sources that are available to us to best understand what happened. And that will include intelligence sources as well as open sources," a State Department spokesman told a daily press briefing. "We're still evaluating based on the information that we have. We haven't arrived at a judgment as to what happened," Philip Crowley said. Regional media reported on Wednesday that a hand grenade was thrown at Mahmoud Ahmadinejad's convoy heading to the city of Hamedan. Unnamed sources said the bomb hit the part of the presidential convoy carrying journalists and some people were injured.The official news agency IRNA later reported that a firecracker was thrown.