A suspected gunman who killed six people in a shooting rampage in Santa Barbara, apparently killed himself, the sheriff said in a press conference.
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Brussels' Zaventem Airport departure hall has reopened to the public, 40 days after twin suicide attacks killed 16 people.
A 21-year-old man accused of planning to travel to Syria and engage in "violent jihad" has appeared in court.
An Australian entrepreneur has publicly identified himself as the inventor of the digital currency Bitcoin.