They also met with top Haitian political leaders, including interim prime minister Claude Joseph and senate president Joseph Lambert, "to encourage open and constructive dialogue to reach a political accord that can enable the country to hold free and fair elections."
Horne said the US team expressed support for "the Haitian government as it seeks justice in this case and affirmed the United States' support for the people of Haiti in this challenging time."
According to Haitian authorities, a hit squad of 28 men–26 Colombians and two US citizens–killed the president in his home, also injuring his wife.
So far, 17 suspects have been arrested, and at least three killed.
But no motive is publicly known and questions are swirling about who might have masterminded the assassination.