Madagascar's defence ministry has told people living near an army barracks occupied by a group of rebel soldiers that they should leave the area.
The officers, who said they had taken over the island nation two days ago, are holed up in the barracks near the airport of the capital Antananarivo.
Some of them were behind the coup that brought President Andry Rajoelina to power last year.
The unrest came on the day of a referendum on a new constitution.
The vote is seen as a way of legitimising Mr Rajoelina's rule of Madagascar, which has been beset by instability for several years.
He has been diplomatically isolated since coming to power in March 2009 and has ignored attempts by regional mediators to broker a consensus with the opposition.
BBC News
