Russian citizens poured dye into ballot boxes, lit explosives and attempted to set fires in sporadic acts of protest during a presidential election. Authorities will interpret voter turnout over three days as a sign of Vladimir Putin's popularity, while Sunday's results are expected to give him a fifth presidential term.

Tensions over the election have been growing in Russia since the death of leading opposition figure Alexei Navalny in an Arctic prison last month. Navalny's widow urged her supporters to flock to the polls at noon on Sunday to protest the election and called on Western governments not to recognize its result.