Haiti's interim Prime Minister Garry Conille has been fired after a transitionary council was created to re-establish democratic order in Haiti, signing a decree on Sunday, local time, to fire him.

Mr Conille will be replaced by Alix Didier Fils-Aimé, a businessman who was previously considered for the job.

The decree, set to be published on Monday, was provided to The Associated Press by a government source. 

It marks even more turmoil in an already rocky democratic transition process for Haiti, which hasn't held democratic elections in years in large part due to the soaring levels of gang violence plaguing the Caribbean nation.

Mr Fils-Aimé is the former president of Haiti's Chamber of Commerce and Industry and in 2015 ran an unsuccessful campaign for Senate. 

The businessman studied at Boston University and was previously considered for the position as a private sector candidate for the post before Mr Conille took the seat.

Mr Conille, a longtime civil servant who has worked with the United Nations, served as prime minister for only six months.

The transitional council was established in April, tasked with choosing Haiti's next prime minister and Cabinet with the hope that it would help quell turmoil in Haiti. 

But the council has been plagued with politics and infighting, and has long been at odds with the prime minister. 

Last week, Organization of American States tried and failed to mediate disagreements in an attempt to save the fragile transition, according to The Miami Herald.

The process suffered another blow in October when three of its members on the council faced corruption accusations, from anti-corruption investigators alleging that they demanded $US750,000 ($1,139,610) in bribes from a government bank director to secure his job.

The report was a significant blow to the nine-member council and is expected to further erode people's trust in it.

Those same members accused of bribery, Smith Augustin, Emmanuel Vertilaire and Louis Gérald Gilles, were among those to sign the decree. Only one member, Edgard Leblanc Fils, did not sign the order.

The move by the transitional council came under fire by some in Haiti like former Justice Minister Bernard Gousse, who told local media that Mr Conille's dismissal was "illegal" because the council was over-extending its powers and because of the corruption allegations levelled against them.

AP