Interim leaders in Burkina Faso have been detained by guards supporting ousted President Blaise Compaore.
President Michel Kafando and Prime Minister Isaac Zida were detained at the presidential palace along with other officials, reports said.
They were “taken hostage” by the the presidential guard (RSP), Reuters quoted the head of the transitional parliament as saying.
Mr Compaore was deposed after violent mass protests in October 2014.
Mr Kafando and Lt Col Zida had been tasked with organising fresh presidential elections next month.
The head of parliament, Moumina Cheriff Sy, said in a statement that military chiefs were trying to negotiate the detained officials’ release.
“The RSP’s countless disruptions are a serious attack on the republic and its institutions,” Mr Sy said, according to Reuters news agency.
There has been prolonged friction between the 1,300-strong RSP and Lt Col Zida, a former second-in-command of the group who last December called for it to be disbanded.