The BBC's Thomas Fessy in the capital, Dakar, says dozens of his fans have protested, demanding his release.
The police did not give reasons for the arrest of Mr Toure, who is popularly known as Thiat. He spoke at an opposition rally on Saturday to urge Mr Wade not to run for re-election next year.
Several opposition leaders joined his fans outside the main court in Dakar to demand his release, our reporter says.
They said the arrest was the latest sign of growing intimidation in Senegal in the build-up to elections.
'Enough is Enough'