Police in Turkey's capital, Ankara, have prevented a large bomb from exploding, the city's governor said.Sniffer dogs detected a van stuffed with explosives in the centre of the city, preventing a "possible catastrophe", Governor Kemal Onal said.
Security had been tightened in the city ahead of the sixth anniversary of the 9/11 attacks in the United States.
Bomb attacks against the UK consulate, a bank and synagogues in Istanbul killed more than 60 people in 2003.
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