The United Nations chief is warning that gangs in Haiti could overrun the capital, Port-au-Prince, leading to a complete breakdown of government authority without additional international support for the beleaguered national police.

Colombian President Gustavo Petro arrived in Haiti's southeastern city of Jacmel on Wednesday afternoon in a rare visit by a foreign head of state to the Caribbean nation, as Haiti endures an extended conflict with armed gangs.

Colombian President Gustavo Petro is visiting Haiti as part of a whirlwind trip to strengthen ties with the violence-wracked country.

Francisco de Miranda, considered to be the precursor of Venezuela’s independence, stitched the country’s first flag in Jacmel and set sail from the port city. A decade later, South American liberator Simón Bolívar launched his successful movement from Jacmel’s shores.