TBILISI, Georgia  —  Authorities in Georgia on Monday released a photograph of a man suspected of throwing a grenade, which failed to explode, at a podium where President Bush (search) was speaking in May.

Interior Minister Vano Merabishvili (search) announced a reward of about $80,000 for information leading to the identification of the dark-haired man in dark glasses pictured in the photo.

Georgian and U.S. authorities believe he is the man who threw a grenade in the crowd of tens of thousands who watched Bush speak on May 10 in the former Soviet republic's capital, Tbilisi (search), Merabishvili told reporters.

The live grenade landed less than 100 feet from the podium but did not explode. A preliminary investigation indicated the activation device deployed too slowly to hit the blasting cap hard enough, the FBI said.