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By Lesley Wroughton SOKOTO, Nigeria (Reuters) - Nigeria's air force said it had killed a number of senior Boko Haram fighters and possibly their overall leader, and U.S. Secretary of State John Kerry pledged to consider ways to ramp up military assistance to Nigeria to defeat the militant group. "Their leader, so called 'Abubakar Shekau', is believed to be fatally wounded on his shoulders," the statement by military spokesman Colonel Sani Kukasheka Usman added, without going into details on the source of its information. The Obama administration has paid close attention to the fight against the militant group which has declared allegiance to Islamic State and destabilized a whole region by attacking Nigeria's neighbors.
By Paulo Prada and Rodrigo Viga RIO DE JANEIRO (Reuters) - Brazilian police said on Tuesday they had uncovered emails between detained International Olympic Committee (IOC) member Patrick Hickey and the head of a ticketing company that discussed the illegal sale of Olympic tickets. Police told a news conference in Rio de Janeiro that they were also investigating bank documents for evidence of money laundering linked to the illegal ticketing ring. Hickey, the former top European official at the IOC, was arrested in Brazil last week on charges that he took part in illegal ticket sales for the Rio Games, which ended on Sunday.