Watch: FBI video shows moment man sets US ballot box on fire

New footage released by the FBI from 28 October reveals the moment a man set a ballot box on fire with an “improvised incendiary device” in Portland, Oregon.

The FBI is investigating three fires at ballot boxes that occurred ahead of the US election – two in Vancouver, Washington, and one in Portland, Oregon.

A reward of up to $25,000 (£19,677) is being offered for information that leads to the identification, arrest, and conviction of those responsible.