Deportation fears mounted Thursday among Haitian migrants camped out in northern Mexico near the border with the United States following the sudden arrival of dozens of police officers at the site.

Immigration agents entered a makeshift Haitian camp in Ciudad Acuna on the border with the United States, urging them to return to where they filed their refugee requests, which many refused to do.

That would force many to return to the southern Mexican city of Tapachula near the border with Guatemala where tens of thousands of migrants are waiting for documents that would allow them to continue north.

Mexican police patrol near the Rio Grande river in Ciudad Acuna in northern Mexico where Haitian migrants are camped out hoping to enter the United States
Mexican police patrol near the Rio Grande river in Ciudad Acuna in northern Mexico where Haitian migrants are camped out hoping to enter the United States AFP / PEDRO PARDO

"We don't want to go to Tapachula, boss," said one of the Haitians when prompted by a Mexican government agent who entered the park where migrants are camping out.

"There we are suffering, sleeping in the square, in the street," added the man, who did not identify himself.

Refugee status would allow the migrants to legally remain in the country without being deported, while waiting to cross into the United States.

"Are they going to deport us or kick us out of here?" asked one of the hundreds of migrants waiting nervously to see what would happen.

United States Border Patrol agents stand guard on the banks of the Rio Grande river at the border with Mexico
United States Border Patrol agents stand guard on the banks of the Rio Grande river at the border with Mexico AFP / PEDRO PARDO

Around 50 police vehicles arrived Thursday in the vicinity of a park in Ciudad Acuna where migrants have been staying for about a week, triggering alarm.

"I have nothing in my country. What am I going to do?" said a Haitian woman who gave her name as Sonia.

The police convoy stopped along the banks of the Rio Grande river, which hundreds of Haitians cross daily between the US and Mexican sides of the border for food and supplies.

Haitian migrants cross the Rio Grande river that separates Mexico and the United States
Haitian migrants cross the Rio Grande river that separates Mexico and the United States AFP / PEDRO PARDO

An officer told AFP that the police have only been asked to deploy at this point and not to arrest anyone.

Police closed the gates to the park, restricting the entry of more people or vehicles, while a helicopter buzzed overhead.

Haitian migrants queue for food in Ciudad Acuna in northern Mexico
Haitian migrants queue for food in Ciudad Acuna in northern Mexico AFP / PEDRO PARDO

So far the migrants have not been evicted from the encampment or prevented from crossing the Rio Grande, some carrying children or belongings on their backs.

"We have come to coordinate care for this population that is in a vulnerable situation. Respect for these people is guaranteed," National Migration Institute commissioner Francisco Garduno told reporters.

"The government of Mexico will provide air and land transportation to allow migrants to return to the states from which they left, to continue with their process or to support their safe return to their countries of origin," he said.

Many of the Haitians have traveled overland from Chile and Brazil, which gave them refuge after the 2010 earthquake that left around 200,000 people dead in Haiti.

According to UNICEF, the United Nation's children's agency, 40 percent of Haitian migrants are minors.

President Joe Biden's administration has begun to repatriate Haitians by air from the Texas border city of Del Rio, prompting a warning from the United Nations that people with genuine asylum claims may be at risk.

In a scathing letter of resignation, the US special envoy to Haiti, Daniel Foote, on Thursday denounced what he called an "inhumane, counterproductive decision" to repatriate the Haitians.

At least 19,000 more Haitians are stranded near the Colombia-Panama border waiting to continue their journey through the lawless Darien jungle.

Haiti is mired in poverty and chaos, a situation worsened after a recent earthquake and the assassination of the country's president in July.

"There is a very difficult situation of instability and violence that has to be taken into consideration," Mexican President Andres Manuel Lopez Obrador said on Thursday.

US Secretary of State Antony Blinken, Mexican Foreign Minister Marcelo Ebrard and their Central American counterparts discussed the crisis on Thursday at the UN General Assembly in New York.

Ebrard called on the international community to step up to address the problem of migration.

"International cooperation is a crucial element for the communities of origin, transit and destination to develop their capacities without having to resort to emigration," Ebrard said.