COTONOU, Benin (AP) _ President Mathieu Kerekou fell short of a first-round victory in his re-election bid in the West African nation of Benin, official results showed Monday.

Kerekou received 47 percent of the vote in the first-round election on March 4, to 28 percent for Nicephore Soglo, Benin's constitutional court said.

Kerekou would have needed 51 percent support to win the election outright.

The outcome means a runoff with longtime rival Soglo, the only other person to have held the presidency in the 10-year-old democracy.

No date has been announced for the runoff, although it is expected to be held next week.

Kerekou, Benin's Cold-War era Marxist dictator, and Soglo, a former World Bank administrator, have traded Benin's top post since the country's first presidential election in 1991.

Kerekou lost that vote to Soglo, making for West Africa's first peaceful and democratic transfer of power. But Kerekou later defeated Soglo in his 1996 re-election bid.