Security forces in Madagascar fired tear gas on opposition candidates leading a protest in the capital Antananarivo on Monday, amid rising political tensions ahead of presidential elections next month.
Eleven of the 13 presidential candidates in the running had called on supporters to march on the central May 13 square to protest what they have described as an "institutional coup" to favour incumbent Andry Rajoelina.
But law enforcement officers moved to disperse the crowd of a few hundred people before it reached the planned destination.