Families of those who died have reflected on the "cold, calculated and cruel nature" of the attacks in Bali at a memorial in London, in front of a wall which bears the names of the 202 victims.
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In a rallying call at the Democratic National Convention, the former US president said Hillary is 'the best darn change-maker I ever met'.
Satoshi Uematsu, 26, was sent to the Yokohama District Public Prosecutors Office in Kanagawa prefecture.
West Yorkshire Police confirmed a 32-year-old woman was taken into custody in connection with the alleged threats.