(Wikipedia) - The 2008 Shiraz bombing was an April 12, 2008 explosion that occurred during prayers at the Hosseinieh Seyyed al-Shohada Mosque in the southern Iranian city of Shiraz. Fourteen people were killed and 202 were injured. Around 800 people, which were mostly youth, were gathered at the Mosque to hear sermons.
The deputy governor of the province, Mohammad Reza Hadaegh, told IRIB an investigation was under way. Iranian officials first stated that the blast was not a terrorist attack, but caused by leftover munitions that were on display in the mosque as part of an exhibition commemorating Iran's 1980-1988 war against Iraq. However, in May, Interior Minister Mostafa Pour Mohammadi said the blast was an act of terrorism and 12 terrorists had been arrested before attacking the Russian Consulate and religious centers in Qom. Intelligence Minister Gholam Hossein Mohseni Ejeyi accused United States and Britain of involvement in the bombing and attempted to press charges against the two countries.
An Iranian monarchist group calling itself the Soldiers of the Kingdom Assembly of Iran, (Anjoman-e Padeshahi-e Iran), claimed responsibility for the bombing.
In November 2008, Iran sentenced three men to death after they were convicted of the bombing. One of these men, Mehdi Eslamian, was hanged with four others on May 9, 2010. His brother had previously been hanged for the bombing.