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 .
NEW : Witnesses report tanks , gunshots outside Madagascar presidential palace . NEW : 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 .