Haiti's election mess turned explosive Sunday when ex-dictator Jean-Claude "Baby Doc" Duvalier unexpectedly arrived in Port-au-Prince after 25 years in exile.
Photos posted on Twitter showed Duvalier, 59, walking off an Air France plane with his companion, Veronique Roy, to be greeted by supporters.
It was his first visit to Haiti since he was deposed by a popular uprising in 1986.
Agence France-Presse reported he was met by a delegation of former officials who had served as his cabinet ministers 25 years ago.
Duvalier's intentions for returning were unclear. Some feared he would try to seize power.
He told the press at the airport that he came back "to help."
Port-au-Prince erupted in a frenzy of rumors and ringing phones.
Haiti is in the middle of a major political crisis over disputed presidential elections.
President Rene Preval is resisting international pressure to remove his handpicked candidate from a runoff that many consider rigged.
Duvalier, who ruled Haiti after the 1971 death of his authoritarian father, Francois "Papa Doc" Duvalier, had been living in exile in France.
In 2007, he asked the Haitian people to forgive him for the "errors committed during his reign" and suggested to supporters he might return.
Preval said then that if Duvalier did return to Haiti, he would face trial.
Duvalier arrived three days after the first anniversary of the devastating earthquake that leveled Port-au-Prince.
Haitian authorities say Duvalier siphoned $100 million from the hemisphere's poorest nation.
Dozens of Haitians were killed in the riots that ousted him.