A Haitian-born doctor based in Florida was arrested Sunday and is believed to be a “central” suspect in the assassination of Haiti’s President Jovenel Moïse, who was killed early Wednesday during an overnight raid of his home. National police chief Leon Charles announced the arrest of Christian Emmanuel Sanon, a 63-year-old doctor, during a press briefing Sunday. The arrest makes Sanon the third Haitian-born suspect with ties to the United States. Moïse was shot dead early on Wednesday at his Port-au-Prince home by what Haitian authorities describe as a unit of assassins formed of 26 Colombians and two Haitian Americans. The president’s wife, Martine, was also wounded in the attack, and was was taken to Miami for treatment. The killing of Haiti’s president comes amid growing chaos in a country already enduring gang violence and political instability. “He arrived by private plane in June with political objectives and contacted a …