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, the United Nations chief warned.

Haiti's capital could become overrun by criminal gangs if the international community does not step up aid to a UN-backed security mission there, United Nations chief Antonio Guterres warned in a report Wednesday.

More than a million people, over half of them children, are now displaced within Haiti where gang violence continues unabated despite the start of a United Nations-backed security mission last year, U.

The U.N. migration agency says internal displacement in Haiti, largely caused by gang violence, has tripled over the last year and now surpasses 1 million people — a record in the Caribbean nation.

Haiti’s gangs caused thousands of deaths and the displacement of over a million people in the past year, according to the UN, highlighting the extreme humanitarian consequences of their increasing control over the country.

More money, equipment and personnel are needed for the Kenya-led international force, Antonio Guterres said, adding that any further delays risk the ‘catastrophic’ collapse of Haiti's security institu

The U.N. migration agency says internal displacement within Haiti has tripled over the last year and now surpasses 1 million people.