The sudden resignation of Haitian Prime Minister Garry Conille on Friday threatens reconstruction on the disaster-struck Island and may delay critical political reforms there, the Associated Press reported.
The move came as part of a growing feud between Conille and Haitian President Michel Martelly, with Conille's resignation expected for weeks, said AP.
The Miami Herald said Conille, a former UN diplomat and doctor, delivered his resignation letter on Thursday, telling the paper that the decision came out of a desire to be "part of the solution and not part of the problem."
Martelly informed the nation in a televised speech on Friday, saying he regretted the fresh political instability caused by the announcement. In Haiti, the prime minister manages much the nation's administrative affairs.
The Haitian leader's earlier picks for prime minister were rejected by parliament and led to political wrangling that stymied the government for the first five months of his presidential term, according to AP.
Observers say the resignation of Conille after only four months is likely to further endanger much-needed donations and aid for the country two years after a devastating earthquake that Haitian officials say took the lives of over 300,000 people and left one million homeless.
Martelly has pledged to hold senatorial elections and manage the billions in promised aid, but the fresh crisis threatens new delays.
The international community has expressed concern over Haiti's slowness to secure foreign investors there and move toward rebuilding the country's shattered economy. The news is also a blow for humanitarian efforts there, as donors are reticent to give to a country that lacks a working government.