Thousands of migrants forced their way through Guatemala's northwestern border on Friday and flooded onto a bridge leading to Mexico, where riot police battled them back, halting their trek toward the United States - at least temporarily.
After arriving at the tall, yellow metal fence Friday, some clambered atop it and on US -donated military jeeps.
Men, women and children then rushed through toward the bridge, about 150 yards (137 meters) away.
This is a breaking news update.
The caravan of thousands of Honduran migrants marching towards the United States dramatically turned around as they reached the Mexican border in Guatemala on Friday morning, a day after hundreds of their comrades faced off with police.
Many with small children were seen queuing in order to register with Mexican immigration authorities, while on the Guatemalan side of the border dozens were left stranded, unable to get past Guatemalan police who stood guard in front of metal gates.
Lieutenant Colonel Jamie Davis, a Pentagon spokesman, said that while National Guard troops were now supporting the Department of Homeland Security on the United States southern border, the Pentagon had not been tasked to provide additional support.
The group chanted: 'We are not smugglers, we are migrants, ' as they reorganized themselves on Friday afternoon.
During the week, in anticipation of the caravan's arrival at the southern border, the Mexican government deployed hundreds of National Police personnel there and issued a series of statements warning the caravan's participants against trying to enter the country illegally.
Mexico's government has said only migrants with the proper papers will be allowed entry into the country, although anyone wishing to seek asylum was free to do so. The official said on September 20, Border Patrol encountered 275 adults and children.
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Image copyright Reuters Image caption A Honduran migrant, part of a caravan trying to reach the U.S., and her daughter at a migrant shelter in Guatemala City Why are they leaving?
"There is nothing there", Orellana said.
A handful of migrants jumped into the Suchiate River below to swim for rafts.
Jonathan Guzman, who joined the mass procession caravan en route, said he dreams of finding a construction job in Los Angeles.
Mexican Foreign Relations Secretary Luis Videgaray said those with passports and valid visas would be let in immediately, though he acknowledged that "we anticipate those are the minority".
Marcelo Ebrard, who is set to become foreign relations secretary when President-elect Andres Manuel Lopez Obrador takes office December 1, said Trump's tweets need to be understood in the context of the upcoming US midterm elections. It said officials were already assisting some migrants who had crossed and requested refugee status.
In part, the response is meant to both dissuade the migrants from even attempting to enter Mexico and potentially to show the Trump administration that Mexico is willing to, as the government put it, "maintain order".
Mexico says it will ask the United Nations refugee office for help with the arrival of several thousand Honduran migrants at its southern border.
US Secretary of State Mike Pompeo is due in Mexico City on Friday.
"Mexico is in favor of legal, safe and orderly migration", he noted.