A preliminary hearing has been set for tomorrow for a man accused of threatening President Barack Obama and others, after he allegedly posted them letters containing suspected ricin.
Paul Kevin Curtis, 45, is scheduled to appear in federal court later and if convicted could face up to 15 years in prison.
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No one has immediately claimed responsibility for the attack.
Met Office says it is set to be “a glorious day” in most areas
He had been in the US to attend the Def Con hacking convention.