Polling places in Democratic-leaning areas of five swing states received bomb threats that officials said likely came from Russia.

Voting in multiple battleground states was disrupted on Tuesday as numerous polling places received death threats, many of which the FBI said it determined had ties to Russia, prolonging polling place hours and raising the specter of election interference.

Federal law enforcement and swing-state election officials reported bomb threats to polling stations on Tuesday, saying they believed the threats originated in Russia.Russian officials denied any involvement in such threats.