Hundreds of migrants travelling across Central America in a mass caravan to the US have tried to breach Mexico’s southern border and enter the country.
Some migrants broke through Guatemalan border fences but then clashed with Mexican riot police in no man’s land.
On Friday, US President Donald Trump thanked Mexico for holding back the migrants from crossing into the US.
The migrants, mostly from Honduras, say they are fleeing violence and poverty, and include women and children.
“They might as well turn back, they’re not coming into this country,” he told reporters on Friday.
After talks on border security in Mexico, Secretary of State Mike Pompeo said the situation was reaching “a moment of crisis”.
What happened on the border?
Hundreds of Central American migrants broke through barriers on a bridge which crosses the river border between Guatemala and Mexico.
Dozens of Mexican police in riot gear reportedly fired tear gas to force them to retreat into no-man’s land after being attacked with stones.
A number of migrants jumped into the Suchiate river to reach rafts, while others either turned back towards Guatemala or simply sat down on the bridge.
Mexican President-elect Andrés Manuel López Obrador has promised to offer work visas to Central Americans when he takes office in December.
Mr Selee said Mexico would “try to defuse the crisis” the same way they did with the last migrant caravan: by giving some people legal status or the chance to apply for asylum and deporting others.
Why are they leaving?
An estimated 10% of the population of Guatemala, El Salvador and Honduras have fled danger, forced gang recruitment and dismal economic opportunities.
The region has one of the highest murder rates in the world. The UN reported murder rates in 2015 in Honduras standing at 63.75 deaths per 100,000 and El Salvador at 108.64 deaths.
Jari Dixon, an opposition politician in Honduras, tweeted on Monday that the caravan was not “seeking the American dream” but “fleeing the Honduras nightmare”.
In a statement on Tuesday, Honduras’ foreign ministry urged its citizens to “not let themselves be used by a movement that is clearly political and seeks to disrupt the governability, stability and peace”.