Hundreds of Mexican Federal Police Officers arrived at the southern border region of Chiapas on Wednesday
A column of some 4,000 Honduran migrants is marching through Guatemala towards the Mexican border
Mexican police insist that they are not there to stop the entry of migrants, but to facilitate order at the border
Trump has threatened to pull back international aid from any country that allows caravan to pass to the US
Migrant marchers have now reached Guatemala City about 180 miles from the border with Mexico
Mexico has dispatched two Boeing 727s full of federal police officers to its southern border, as the country prepares for the arrival of a migrant caravan of thousands from Central America.
Five hundred federal police officers in riot gear arrived on Wednesday in Tapachula, Chiapas on the border with Guatemala, where some 4,000 migrants are now marching northward.
The presence of federal forces on the southern border of the country is not to stop migrants from crossing the border, but to help immigration officials maintain order, Mexican Federal Police Commissioner Manelich Castilla Craviotto told Noticeros Televisia.
'The INM reiterates its unrestricted commitment to respect the human rights of migrants,' said Mexico's National Institute of Migration, a government agency that controls and supervises immigration.