Burkina Faso's interim president Michel Kafando voiced reservations Monday about a regional proposal to end the crisis sparked by last week's military coup in the impoverished west African country.

"I have reservations about this draft agreement" which leaves "deep-rooted problems" without solutions, he said in an interview with RFI radio.

Kafando, who was detained by presidential guard officers on Wednesday, said he was "still under house arrest" and was "not a part of the negotiations" mediated by the Economic Community of West African States (ECOWAS) that came up with the 12-point plan.