Burkina Faso’s army has arrived in the country’s capital, Ouagadougou, seeking the surrender of coup leader, General Gilbert Diendere.
Negotiations between army chiefs and the presidential guard have stalled, a senior military officer said.
Troops are moving through the capital, as the deadline to Gen. Gilbert Diendere to surrender passed.
Gilbert Diendere staged a coup last week after opposing moves to integrate the presidential guard into the army.
He has released the president and the prime minister, following talks brokered by mediators.
The coup has been widely condemned, with the African Union suspending Burkina Faso’s membership.
Gilbert Diendere says he will step aside once regional leaders, due to meet in Nigeria, endorse a peace plan, including an amnesty for coup plotters.
Burkina Faso’s PM Isaac Zida was captured by the presidential guard in last week’s coup.
France’s ambassador to Burkina Faso, Gilles Thibault, has also tweeted that interim President Michel Kafando, who was arrested on September 16, has been released from house arrest and is now at the ambassador’s residence.
Speaking from a secret location, Gen. Gilbert Diendere said: “Ready to surrender? We are not there yet… We wish to continue the discussions and we say to all that we are ready to implement Ecowas’ [West African regional group’s] decisions.”
He also apologized to the population, saying an apology was “the least we could do”.
The Ecowas plan should be discussed by West African heads of state in Nigeria on September 22.
The presidential guard is loyal to ousted President Blaise Compaore and installed Gen. Gilbert Diendere as the new leader last week.
Since then, at least 10 people have been killed and more than 100 injured in clashes.
Burkina Faso’s army ordered the presidential guard to disarm before it marched on the capital.
“We must now secure the surrender of the [coup leaders] without gunfire or bloodshed,” Col. Serge Alain Ouedraogo, of the Burkinabe police, told AFP.
Ecowas’ plan includes the return to civilian government, an amnesty for the soldiers behind the coup and elections by the end of November.
Gilbert Diendere, who was the chief of staff to Blaise Compaore, led the coup a month before elections had been due in Burkina Faso.
General Gilbert Diendere, a close ally of former Burkina Faso President Blaise Compaore, has been named the country’s new leader after presidential guard officers have seized power in a coup, with shooting reported in the capital, Ouagadougou.
French President Francois Hollande condemned what he called a coup in the former French colony.
Presidential forces opened fire to disperse protesters in Ouagadougou, and some were arrested, reports say.
The coup leaders have imposed a night-time curfew across Burkina Faso, and have ordered the closure of land and air borders, AFP reports.
The headquarters of Blaise Compaore’s Congress for Democracy and Progress (CDP) party were ransacked in Ouagadougou as news of the coup spread, it adds.
Francois Hollande called for the immediate release of interim President Michel Kafando and PM Isaac Zida, who were detained at a cabinet meeting in the president palace on September 16.
Their transitional government was due to hand power to a new government after elections on October 11.
Blaise Compaore was ousted in a popular uprising last year after 27 years in power, and is currently in exile.
Some of his key allies had been barred from contesting the election.
A statement issued by the coup leaders said Burkina Faso would be led by Gen. Gilbert Diendere, Blaise Compaore’s former chief-of-staff.
An earlier announcement on state television said wide-ranging talks would be held to form a new interim government that would organize “peaceful and inclusive elections”.
Transitional parliamentary speaker Cheriff Sy said the move was “clearly a coup”.
Cheriff Sy said the presidential guard had “sequestrated” the interim government, and he urged people to protest on the streets.
“We are in a resistance situation against adversity,” he added.
Earlier, there was heavy shooting by presidential forces at the capital’s Revolution Square, where protesters had gathered to demand the release of the interim leaders.
The elite presidential guard has been trained, in part, by the US. It is the most powerful armed group in Burkina Faso and often disrupted the activities of the transitional government as it tried to cling to the privileges it enjoyed under Blaise Compaore’s rule.
It is seen to be close to him, and is not popular on the streets. So its seizure of power could be a recipe for serious violence.
The transitional government might have made two mistakes – preventing politicians loyal to Blaise Compaore from running in next month’s elections and allowing the Reconciliation Commission, formed to heal wounds after the end of his authoritarian rule, to release a report calling for the presidential guard to be disbanded.
Some argue that a newly elected president would have had greater legitimacy to take such action.