President Macky Sall won first round of election on Sunday - Senegal PM

Senegal's prime minister said President Macky Sall won the first round of an election on Sunday with at least 57 percent of votes, even as the opposition said preliminary results showed a run-off was unavoidable.

"We must congratulate the President for his re-election in the first round," Prime Minister Mohammed Dionne told journalists, also citing preliminary figures. Official results are due by Friday at the latest with a run-off for the top two on March 24 if no one secures a majority.