Madagascar's president named a new prime minister after months of widespread discontent at the performance of his government.

President Hery Rajaonarimampianina named Air Force Gen. Jean Ravelonarivo as the new head of government late Wednesday.

Ravelonarivo replaces Roger Kolo who resigned Monday along with the entire government.

Observers are concerned about the political stability of Madagascar. Risk consultancy firm, Control Risks, recently placed Madagascar on a list of countries with a high threat of political instability in 2015.

Electricity blackouts are common and two people died following protests over power cuts in Toamasina, Madagascar's main port, in December.

Madagascar returned to democratic rule after elections at the end of 2012. For five years previously the island had been run by a transitional government following a coup d'état in 2009.