European Union (EU) foreign and security policy chief Javier Solana on Thursday condemned the bombing of the al-Askari shrine in the central Iraqi city of Samarra and the ensuing violence in Iraq.
The shrine bombing, the following random killings and the attacks against mosques "are clearly destined to undermine the process of rebuilding Iraq," Solana said in a statement.
"There must be an end to the vicious circle of violence. Violence must stop in Iraq now," he said.
Solana urged all concerned parties to allow the process of forming a government to continue peacefully and build on "a multi- confessional and peaceful society".
Suspected al Qaeda linked militants on Wednesday morning bombed the 1,200-year-old sacred tombs of Ali al-Hadi and al-Hasan al- Askari, the 10th and 11th Shia Imams, in Samarra, north of Baghdad.
The bombing sparked an wave of sectarian violence and reprisal attacks on Sunni mosques in the country. Officials say that more than 120 people have been killed in violence since the shrine bombing.