Mouwafak al-Rubaie said the ringleader in the operation, an Iraqi he identified as Haitham Sabah Shaker Mohammed al-Badri, was still on the run.
The bombing set in motion an epidemic of sectarian killing and revenge attacks on Sunni and Shiite mosques, a spasm of violence that took the country to the brink of civil war.
Al-Rubaie identified the arrested man as Yousri Fakher Mohammed Ali, a Tunisian also known as Abu Qudama. The national security chief said Ali was seriously wounded in a clash with security forces north of Baghdad few days ago. Fifteen other foreign fighters were killed in the confrontation, he said.
Al-Rubaie said Ali and al-Badri were in a gang that included one other Iraqi and four Saudis who plotted the attack, the AP reports.
Subscribe to Pravda.Ru Telegram channel, Facebook, RSS!