As the 4,000-strong migrant caravan reached the Guatemala-Mexico border late Friday, the Central Americans in tow charged through the border fence and were met by Mexican authorities armed with pepper spray and other non-lethal materiel which led to many retreating.
There were about 10 buses awaiting migrants along the highway between Tapachula and Ciudad Hidalgo and the drivers had been instructed to carry the migrants to shelters in Tapachula, the officers said.
Since the convoy formed last weekend, Trump has threatened to halt aid to Honduras and Guatemala, and potentially close the US border with Mexico with the help of the military if the migrants' march is not stopped.
Under a proposed bilateral agreement that the Trump administration has discussed with Mexican officials, United States border officials would be able to legally turn back asylum-seekers who first pass through Mexico, forcing them to seek protection south of the border. "They are also helping the vulnerable population - women, children, and others who require it" said an NMI official.
The decision to re-form the migrant caravan capped a day in which Mexican authorities again refused mass entry to migrants on the bridge, instead accepting dozens of women and children.
President Trump has repeatedly warned the migrants to turn back, threatening to close down the United States border and cut aid to countries allowing the group to pass.
Reportedly, Mexican authorities have further said they're asking for help from the United Nations High Commissioner for Refugees to process migrants seeking refugee status. The U.S. president has made it clear to Mexico that he is monitoring its response.
On Saturday the Honduran Office of Foreign Ministry released a statement noting that it had closed the border with Guatemala at Aguas Calientes in order to "save the lives and physical integrity of citizens and foreigners" that try to pass through customs in this city.
"This humanitarian aid has been conditioned on detention", Ochoa said, according to video posted on USA -based Spanish-language news network Telemundo.
FILE - Mexico's President-elect Andres Manuel Lopez Obrador speaks during a rally as part of a tour to thank supporters for his victory in the July 1 election, in Acapulco, Oct. 3, 2018. Some said that they had been teargassed.
"I hope Trump allows us to make it to the other side", he said.
"We shall work with our partners in the region to investigate and prosecute to the fullest extent of the law all who seek to encourage and profit from irregular migration", she said.
Sairy Bueso, a 24-year old Honduran mother of two, was another migrant who abandoned the bridge and crossed into Mexico via the river.
Most of the migrants then swam or took rafts across the river, but one group had remained camped out on the bridge.
Encamped for two nights using backpacks for pillows and tents made of trash bags on a long bridge between Guatemala and Mexico, the migrant caravan began in San Pedro Sula, Honduras, last week and grew exponentially as it passed through Guatemala.
Thousands of Central American migrants fleeing poverty and violence were initially prevented from crossing the bridge.
"Nothing bad will happen to the Central American migrants", Lopez Obrador said.
According toThe Washington Post, "The leaders said an estimated 5,400 migrants had entered Guatemala since the caravan was announced a week ago, and about 2,000 Hondurans have returned voluntarily".
"One of my companions went to look for some plastic", she said.
But Mr Trump warned: 'As of this moment, I thank Mexico, ' he said.
'They're not coming into this country, ' the president said.
"Look at these kids without diapers, without food", said Eva Fernandez, a US citizen and California resident who heads an immigrant advocacy group, as she livestreamed the scene to friends in Honduras.
Caravan members say they are fleeing gang violence at home and looking for jobs in the USA - neither of which has traditionally been enough reason to win asylum on its own.
But Mexico and Central American nations have come under intense pressure to stop the caravan from Trump, who has repeatedly highlighted the 3,000-strong caravan at campaign rallies before the next month's USA midterm elections.