Facebook said it had activated a command center which was monitoring the platform in real time.
Four years ago, some 57 million voters had cast an early ballot, according to the US Election Assistance Commission.
The vote follows a last-minute opposition unity bid to dislodge Paul Biya, one of Africa's longest-serving rulers.
His only challenger is former defence minister Shigeru Ishiba, a hawkish self-confessed "military geek".
More than a thousand lawmakers from both houses of parliament and the country's four provincial assemblies began choosing from among three candidates
In the run-up to Wednesday's general election, Prime Minister Najib Razak has been accused of amplifying racial tensions.
Bio, a former soldier, won 51.81% of the ballots in the March 31 election compared with 48.19 percent for Samura Kamara, said Mohamed Conteh, the head...
The heads of the CIA, FBI, NSA and three other spy agencies were unanimous in saying that Moscow's efforts to disrupt US politics are as strong as they...
The EC had been blamed for failure to conduct the exercise in accordance with the laws governing Parliamentary elections.
Rwandan voters living in Uganda cast their votes to elect their new president.
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