The explosion occurred in a low income neighborhood, near a wholesale flower market and a major heritage site: the 800-year-old Qutub minar, the world's tallest brick minaret.

爆炸发生在一个低收入居民区，附近有一个花卉批发市场和重要的古迹——古伯特高塔，它是世界上最高的砖塔。

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Saturday's doubles matches see Argentine pairing Carlos Berlocq and Eduardo Schwank take on Ivo Minar and Lukas Rosol -- who dumped Rafael Nadal out of Wimbledon in June.

CNN: Spain surge into lead against U.S. in Davis Cup semis

In Coquimbo, the Czechs are in control of their tie after Ivo Minar, ranked 247 in the world, produced a major upset when hammering Chilean number one Nicolas Massu 6-0, 6-2, 6-3.

BBC: France take shock Davis Cup lead over Spain

Ms Bokova also laid wreaths at Shaheed Minar, a national monument commemorating those killed during the Language Movement demonstrations of 1952, and at the National Memorial honouring the martyrs of the Liberation War of 1971.

UNESCO: Social and Human Sciences