Despite a judge ordering all children under five be reunited with their parents, there are conflicting accounts of how many children are involved and fears that some may never see their families again.
French Finance Minister Bruno Le Maire said on Sunday that the EU should take united action against possible further tariffs on the European goods by the US. Earlier, Germany announced that it would back a lowering of EU levies on imports of US cars.
After a first blast in the Mexican municipality of Tultepec, firefighters, police and other rescue workers arrived at the scene when a second explosion occurred.
President-elect Andres Manuel Lopez Obrador has pledged to decrease violence when he comes into office but the factors compounding the volatility in Mexico may make it a hard task to shoulder.
A late-night official count forecast that leftist Andres Manuel Lopez Obrador would win at least 53 percent of the vote, a margin not seen in the country for many years. His rivals have conceded defeat.
Of the four candidates in Sunday's election, Andres Manuel Lopez Obrador who is the leader of the National Regeneration Movement or MORENA has emerged as the frontrunner in most polls.
Leading by more than 20 points in the polls Andres Manuel Lopez Obrador has successfully tapped voters' anger with a seemingly never-ending series of corruption scandals and horrific violence that left a record 25,000 murders last year.
Tens of thousands of protesters marched in cities across the US to demand the Trump administration reverse an immigration crackdown that has separated children from parents at the US-Mexico border and led to plans for military-run detention camps.
As Mexicans prepare to cast their ballots on Sunday, the people of Nahuatzen, an inhabitants of indigenous village tucked into the country's western mountains, are busy blocking streets with bonfires to keep out electoral authorities.
While US President Donald Trump's administration is being criticised for its immigration policy, neighbouring Mexico is perhaps the country most impacted by it.
The left-leaning presidential candidate Lopez Obrador promises a "radical" government that would end unearned privilege, stamp out impunity and imbue the country with "moral authority".
As Mexico goes to polls on Sunday, opinion polls give leftist front-runner Andres Manuel Lopez Obrado more than 20 percentage points lead over other presidential candidates.
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