Haitian police have taken former dictator Jean- Claude “Baby Doc” Duvalier for questioning after his mysterious return to the quake-scarred country on Sunday.
Senior officials say he is to be probed by judicial authorities to determine whether he should face charges for stealing from the Haitian treasury during his rule.
Duvalier is believed to be preparing a legal response.
Human rights groups have long called for his arrest for the excesses of his 15 years in office.
“Baby Doc” came to power after his feared father, Francois “Papa Doc” Duvalier, died in 1971 and ruled the impoverished Caribbean country with an iron fist.
The dreaded Tonton Macoutes, a police force loyal to the Duvalier family, have been accused of kidnap and torture and the killing of 30,000 suspected opponents during the 1960s and 70s.
“Baby Doc” remained in power until a popular uprising in 1986 and was forced to step down by the US.
Duvalier spent 25 years in exile in France before arriving in Port-au-Prince at the weekend.