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In this photograph taken on February 24, 2015, shows the Indian tri-colour as it flies over Connaught Place in New Delhi, ahead of World Environment Day which falls on June 5.   The Indian government is under intense pressure to act after the World Health Organization last year declared New Delhi the world's most polluted capital.  At least 3,000 people die prematurely every year in the city because of air pollution, according to a joint study by Boston-based Health Effects Institute and Delhi's Energy Resources Institute.  AFP PHOTO / CHANDAN KHANNA        (Photo credit should read Chandan Khanna/AFP/Getty Images)
In this photograph taken on February 24, 2015, shows the Indian tri-colour as it flies over Connaught Place in New Delhi, ahead of World Environment Day which falls on June 5.   The Indian government is under intense pressure to act after the World Health Organization last year declared New Delhi the world's most polluted capital.  At least 3,000 people die prematurely every year in the city because of air pollution, according to a joint study by Boston-based Health Effects Institute and Delhi's Energy Resources Institute.  AFP PHOTO / CHANDAN KHANNA        (Photo credit should read Chandan Khanna/AFP/Getty Images)

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Police in New Delhi are investigating allegations that an American woman was raped in an upscale hotel earlier this year by a group of men.

US tourist alleges she was gang-raped

Police in New Delhi are investigating allegations that an American woman was raped in an upscale hotel earlier this year by a group of men.