The UN chief has condemned the incident in the strongest terms, according to a statement issued by his Spokesperson, Stephane Dujarric.
"The Secretary-General calls on all Haitians to preserve the constitutional order, remain united in the face of this abhorrent act and reject all violence," it said.
Bagaimana tanggapan anda mengenai artikel ini?
President Moise, 53, was shot dead in an overnight attack in his private residence in Haiti’s capital, Port-au-Prince.
His wife, Martine, was also injured and is receiving treatment, according to media reports.
The entrepreneur and politician was elected in November 2016 and began serving the following February.
Guterres has extended his deepest condolences to the people and Government of Haiti, and to the family of the late President.
The UN will continue to stand with the Government and the people of Haiti, the statement continued.