A suicide bomber was caught on film an instant before devastating synagogue blasts in Istanbul, Turkish authorities said today, while the owner of a vehicle used in the attacks has been arrested.
Financial markets from Tokyo to New York dipped after claims that Osama bin Laden's al-Qaeda network carried out what Turkey said was an attack masterminded abroad. Turkish shares also ended down, but debt prices and the lira currency held steady.
An Arabic newspaper said a unit of al-Qaeda had claimed responsibility and pledged more strikes against Western states, specifically the United States and its allies Britain, Italy, Australia and Japan.
Interior Minister Abdulkadir Aksu said Saturday's attacks on two Istanbul synagogues, which killed 24 people and wounded 300, were the work of a "foreign source".
"There is no organisation in Turkey that could have carried this out by itself," he told the Vatannewspaper.
Mr Aksu said one of the bombers, at the Neve Shalom synagogue, could be discerned in his vehicle on security film shot before the blast. "But it's not clear. We're trying to clarify and make an identification," he said.
Asked if there was anyone else in the vehicles and whether these were suicide bombings, he said: "Yes, yes, these were definitely (suicide attacks) ... They were both alone."
Istanbul governor Mr Muammer Guler said investigations into the blasts were advancing and "important clues" had been uncovered.
Each vehicle in the blasts was packed with 400 kg (850 pounds) of explosives and two corpses were found with wires attached to them suggesting they might be suicide bombers.
Prime Minister Tayyip Erdogan told reporters after chairing a lengthy cabinet meeting on the crisis that pieces of skin believed to belong to the suicide bombers had been recovered and sent for DNA tests to help identify the culprits.
The semi-official Anatolia news agency said police had detained a man in the eastern Turkish city of Bingol who owned one of the pick-up trucks.
The London-based Arabic-language newspaper al-Quds al-Arabisaid it had received a statement from a division of al-Qaeda claiming responsibility and vowing more attacks.