A statement has been posted on the official Facebook page of the presidency of Burkina Faso, in which the country's leader Lt Col Paul-Henri Sandaogo Damiba urges the population to "stay calm and be careful" amid reports of gunfire and a heavy military presence in the capital.
There are reports that a coup may be taking place, but a government source, who wished to remain anonymous, told the BBC some soldiers had mutinied.
Lt Col Damiba also said people should not panic over what they are reading on social media.
"Talks are under way to restore calm and serenity," amid a "confused" situation caused by certain elements of the army, the statement said.
"The enemy attacking our country only wants division between Burkinabès to accomplish its destabilisation action", it continued.