El Salvador Supreme Electoral Court says that with nearly 80 percent of ballots counted, Nayib Bukele had 53 percent of the votes.
Prosecutors say Guzman amassed a $14 billion fortune by bribery, murder and smuggling drugs, while his former associates say the drug lord paid millions of dollars in bribes to Mexican officials.
The disaster occurred last week as the government wages a huge effort to clamp down on fuel theft, which costs Mexico an estimated $3 billion in 2017.
During his visit to Panama, Pope Francis also pledged support for "all efforts" to avoid further suffering in crisis-torn Venezuela and insisted public officials live simply, honestly and transparently.
The blast occurred as fuel thieves were tapping an oil pipeline in a small town in the Mexican state of Hidalgo.
Many Mexican immigrants have been deported back to Mexico from the US. Some find it hard to adjust while others continue their lives as if they lever left.
The migrants who passed through the Agua Caliente border set sights on the US, hoping to leave behind violence and poverty to start a new life.
Guatemala President Jimmy Morales announced that he was ending the commission's run in the country, but Guatemala's top court blocked the expulsion.
As Trump continues to insist on the need for a border wall, thousands of people from Honduras, Guatemala and El Salvador have been arriving in Mexico with the aim of getting into the US. Most of them say they are fleeing violence.
Passions are ablaze in the US capital where the government is partially shut down over the president's demand for a border wall which critics say is unnecessary. Each side took their case to the people on Tuesday.
Thousands of migrants are seeking to apply for asylum in the United States at the border town. As their fate remains uncertain, some say they are willing to settle down in Mexico, while others are determined to move on.
Eight-year-old boy Felipe Gomez Alonzo, who was apprehended with his family by US border agents, dies at a hospital in New Mexico, officials say.
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