PORT-AU-PRINCE, Haiti -- Heavily armed gangs tried to seize control of Haiti's main international airport on Monday, exchanging gunfire with police and soldiers in the latest attack on key government sites in an explosion of violence that includes a mass escape from the country's two biggest prisons.
The Toussaint Louverture International Airport was closed when the attack occurred, with no planes operating and no passengers on site.
Associated Press journalists saw an armored truck on the tarmac shooting at gangs to try to prevent them from entering airport grounds as scores of employees and other workers fled from whizzing bullets.
It wasn't immediately clear as of late Monday whether the attack, which was the biggest one in Haiti's history involving the airport, was successful.
Last week, the airport was struck briefly by bullets amid ongoing gang attacks, but gangs did not enter the airport nor seize control of it.
The attack occurred just hours after authorities in Haiti ordered a nighttime curfew following violence in which armed gang members overran the two biggest prisons and freed thousands of inmates over the weekend.
"The secretary-general is deeply concerned by the rapidly deteriorating security situation in Port-au-Prince, where armed gangs have intensified their attacks on critical infrastructure over the weekend," said U.N. spokesperson Stephane Dujarric.
A 72-hour state of emergency began Sunday night. The government said it would try to track down the escaped inmates, including from a penitentiary where the vast majority were in pretrial detention, with some accused of slayings, kidnappings and other crimes.
Gangs already were estimated to control up to 80% of Port-au-Prince, the capital. They are increasingly coordinating their actions and choosing once-unthinkable targets such as the Central Bank.
Prime Minister Ariel Henry traveled abroad last week to try to salvage support for a United Nations-backed security force to help stabilize Haiti in its conflict with the increasingly powerful crime groups.
Haiti's National Police has roughly 9,000 officers to provide security for more than 11 million people, according to the U.N. They are routinely overwhelmed and outgunned.
The deadly weekend marked a new low in Haiti's downward spiral of violence. At least nine people had been killed since Thursday -- four of them police officers -- as gangs stepped up coordinated attacks on state institutions in Port-au-Prince, including the international airport and national soccer stadium.
But the attack on the National Penitentiary late Saturday shocked Haitians. All but 98 of the 3,798 inmates being held at the penitentiary escaped, according to the Office of Citizen Protection. Meanwhile, at the Croix-des-Bouquets prison, 1,033 escaped, including 298 convicts.
The office said late Monday that it was seriously concerned about the safety of judges, prosecutors, victims, attorneys and others following the mass escape.
Among the few dozen people who chose to stay in prison are 18 former Colombian soldiers accused of working as mercenaries in the July 2021 assassination of Haitian President Jovenel Moïse.
Colombia's foreign ministry has called on Haiti to provide "special protection" for the men.
A second Port-au-Prince prison containing around 1,400 inmates also was overrun.
After gangs opened fire at Haiti's international airport last week, the U.S. Embassy said it was halting all official travel to the country. On Sunday night, it urged all American citizens to depart as soon as possible.
The Biden administration, which has refused to commit troops to any multinational force for Haiti while offering money and logistical support, said it was monitoring the rapidly deteriorating security situation with grave concern.
Information for this article was contributed by Joshua Goodman and Danica Coto of The Associated Press.