Thousands of demonstrators took to the streets of Senegal's capital to protest frequent power cuts.
Angry mobs attacked and destroyed government buildings across the city Monday, including the national electricity company's offices. In some parts of Dakar, people claim they now go regularly without electricity for 24 hours or more.
Riot police fought back in some areas with tear gas and water cannons.
A national police spokesman wouldn't immediately comment on whether anyone had been injured.
These protests are the third episode of unrest in Dakar in less than a week. Riots erupted Thursday against proposed changes to Senegal's constitution. On Sunday hundreds of Muslim youth destroyed a church and bars in a normally quiet suburb of the capital.