Politicians in the tiny nation of Guinea-Bissau say a new prime minister has been chosen to help lead a transition following last month's coup.

Rui Duarte Barros, a former finance minister, will serve in the position following negotiations Wednesday. However, those talks did not include the participation of the African country's former ruling party.

Some mediators have expressed concerns about the legitimacy of such a post-coup transition, currently being led by interim President Manuel Serifo Nhamadjo.

Guinea-Bissau was just weeks away from holding a presidential runoff vote when a military junta arrested the election's front-runner and the country's interim leader. Both men later fled the country.