President Jovenel Moïse
Pres. Joe Biden said he was sending Marines only to protect the U.S. embassy.
Police say Christian Emmanuel Sanon was in contact with a firm that recruited the suspects in the killing.
The Biden administration has so far given no indication of military help, though the FBI is aiding the investigation into President Jovenel Moïse's assassination.
Seventeen suspects have been detained so far in the stunning assassination of Haitian President Jovenel Moïse at his home.