Why ‘8647’ landed ex-FBI chief Comey in Trump’s crosshairs

A federal grand jury in North Carolina has indicted a suspect on charges of knowingly threatening the US President and transmitting a threat in interstate commerce. The suspect is accused of posting an image of seashells arranged to spell "8647" on Instagram, which Trump and his supporters claim is a coded call for violence. The charge carries a maximum penalty of 10 years in prison.