Hundreds of protesters have gathered for a second day in the Burkina Faso capital Ouagadougou, calling on President Blaise Compaore to resign.
Opposition figures used social media overnight to call for new protests.
They are angry at Mr Compaore, who responded to a day of violence by saying he would stay in power for a year under a transitional government.
He agreed not to seek another term in office after angry protesters torched government and parliament buildings.
The creation of a transitional government was announced by army chief General Honore Traore, who said it would “be put in place in consultation with all parties”.
He also declared the dissolution of parliament.
“A return to the constitutional order is expected in no more than 12 months,” Gen Traore added, without giving no further details.
UN chief Ban Ki-moon’s special envoy for West Africa, Mohamed Ibn Chambas, is expected in Burkina Faso to try to ease the crisis, the UN said.