REPUBLIKA.CO.ID, ANTANANARIVO -- Two people were killed and dozens injured by an explosion during an Independence Day concert in Madagascar's capital late on Sunday, police said.

President Hery Rajaonarimampianina called the blast an "unacceptable terrorist act", when he visited the 72 people wounded in hospital.

Police said the explosive device at the open air Mahamasina stadium called was likely a grenade.

A similar attack on a concert after the inauguration of Rajaonarimampianina in January 2014 killed one child.

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