Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Haiti Prime Minister Appeals for Calm After President Shot Dead VOA News Haitian interim Prime Minister Claude Joseph has appealed for calm after President Jovenel Moïse was shot dead overnight in an attack at his private residence. In a statementWednesday, Joseph said an unidentified group of people who attacked the president's private residence, located in a suburb of the capital, Port-au-Prince, were responsible for the killing, which he called a "hateful, inhuman and barbaric act." Josephdescribed the attackers as "foreigners" during an interview with a Port-au-Prince radio station Wednesday morning and saidsome group members spoke in Spanish. He also said Moïse's wife, Martine, was injured and taken to a hospital for treatment. "The president's wife is alive and is being treated," Joseph confirmed to local radio station Magik 9. Josephsaid the national police force is in control of the situation now and that measures have been taken to "protect the nation."He vowed to ensure the continuity of government adding that "we are a democracy." Joseph said he had met with officials of the National Police Force and that he plans to address the nation later today. The U.S. is "assessing" the attack andU.S.President Joe Biden will be briefed on the situation inHaiti, WhiteHouse Press Secretary Jen Psaki told MSNBC. Haiti has been experiencing political instability and division as well as a rise in gang violence. Last weekin Port-au-Prince,gang leader Jimmy Cherisier, who is known by the nickname Barbeque, took to the streets to protest Moise's government, calling on him to resign. "Jovenel (Moise) must go!" Cherisier told reporters during the protest. "A new group of people needs to lead this country and we must sit together around a table, have a national dialogue so we can redefine this country." SandraLemaire in Washington andMatiadoVilme in Port-au-Prince contributed to this report, whichincludes information from the Associated Press, AFP and Reuters .