NEW : Witnesses report tanks , gunshots outside Madagascar presidential palace . At the U.S. embassy in Antananarivo , the head of security announced that explosions and gunshots had been heard at the palace , according to an embassy employee who asked not to be named for security reasons . The Associated Press reports that the army has been firing on protesters in a bid to quell unrest and restore order after President Marc Ravalomanana was ousted by his own parliament last week. Not immediately clear if military had taken control of the palace . African Union calls emergency meeting to discuss power struggle . Crisis has plunged poverty-stricken nation into turmoil .
NEW : Witnesses report tanks , gunshots outside Madagascar presidential palace . The Associated Press reports that the army has been firing on protesters in a bid to quell unrest and restore order after President Marc Ravalomanana was ousted by his own parliament last week. Not immediately clear if military had taken control of the palace . African Union calls emergency meeting to discuss power struggle . Crisis has plunged poverty-stricken nation into turmoil .