The U.S. Embassy in Port-au-Prince, Haiti on Saturday alerted U.S. citizens of ongoing security operations north and south of the embassy and in Croix-de-Bouquets.
Heavy gunfire was reported in the Haitian capital, prompting U.S. government personnel to halt all movements, according to an alert from the Department of State.
The embassy remains open for emergency services.
Officials urged nearby U.S. citizens to avoid the area and monitor local media for updates.
The victims, with Ohio-based Christian Aid Ministries, were on their way back from an orphanage when they were taken hostage, according to the Justice Department.
The State Department currently maintains a Level 4 "Do Not Travel" advisory for Haiti, citing kidnapping, crime, terrorist activity, civil unrest and limited healthcare.
The State Department did not immediately respond to Fox News Digital's request for comment.
Fox News Digital's Ashley Carnahan contributed to this report.