People gather on a street in downtown Mexico City during an earthquake on September 7, 2017. An earthquake of magnitude 8.0 struck southern Mexico late Thursday and was felt as far away as Mexico City, the US Geological Survey said, issuing a tsunami warning. It hit offshore 120 kilometers (75 miles) southwest of the town of Tres Picos in the state of Chiapas. AFP/ Ronaldo Schemidt

Rescuers clear the ruble in search of survivors in Juchitan de Zaragoza, the hardest-hit city by a powerful earthquake that struck Mexico's Pacific coast September 7 at night. Police, soldiers and emergency workers raced to rescue survivors from the ruins of Mexico's most powerful earthquake in a century, which killed at least 61 people, as storm Katia menaced the country's eastern coast Saturday with heavy rains. AFP/ Ronaldo Schemidt

A soldier stands guard a few metres away from the Sensacion hotel which collapsed with the powerful earthquake that struck Mexico overnight, in Matias Romero, Oaxaca State, on September 8, 2017. Mexico's most powerful earthquake in a century killed at least 35 people, officials said Friday, after it struck the Pacific coast, wrecking homes and sending families fleeing into the streets. AFP/ Ronaldo Schemidt

A man tries to open his Beetle's car, crashed by debris from his house which was damaged by a powerful earthquake that struck Mexico's Pacific coast late on September 7, in Juchitan de Zaragoza, Mexico, on September 9, 2017. Police, soldiers and emergency workers raced to rescue survivors from the ruins of Mexico's most powerful earthquake in a century, which killed at least 61 people, as storm Katia menaced the country's eastern coast Saturday with heavy rains. AFP/ Ronaldo Sc...

The remains of a graffiti is surrounded by the rubble from buildings knocked down Thursday night by a 8.1-magnitude quake, in Juchitan de Zaragoza, Mexico, on September 9, 2017. Police, soldiers and emergency workers raced to rescue survivors from the ruins of Mexico's most powerful earthquake in a century, which killed at least 61 people, as storm Katia menaced the country's eastern coast Saturday with heavy rains. AFP/ Ronaldo Schemidt

People injured during the 8.2 magnitude earthquake that hit Mexico's Pacific coast, receive medical attention at a tent in an improvised shelter in Juchitan de Zaragoza, state of Oaxaca on September 9, 2017. Mexico's most powerful earthquake in a century killed at least 35 people, officials said, after it struck the Pacific coast, wrecking homes and sending families fleeing into the streets. AFP/ Ronaldo Schemidt

People walk by buildings knocked down by a quake, in Ixtaltepec, Oaxaca, Mexico, on September 9, 2017. Mexico's most powerful earthquake in a century killed at least 35 people, officials said, after it struck the Pacific coast, wrecking homes and sending families fleeing into the streets. AFP/ Ronaldo Schemidt

A man rides his motorbike in Juchitan de Zaragoza, state of Oaxaca on September 9, 2017, the day after an 8.2 magnitude earthquake hit Mexico's Pacific coast, Rescuers pulled bodies from the rubble and grieving families carried coffins through the streets after Mexico's biggest earthquake in a century killed 65 people, while elsewhere two died in mudslides unleashed by storm Katia. AFP/ Ronaldo Schemidt

Relatives and friends accompany to the cemetery the remains of a victim of Thursday night's 8.2 magnitude quake, in Juchitan, Oaxaca, Mexico, on September 10, 2017. Rescuers pulled bodies from the rubble and grieving families carried coffins through the streets Saturday after Mexico's biggest earthquake in a century killed 65 people. AFP/ Ronaldo Schemidt

Relatives and friends accompany to the cemetery the remains of a victim of Thursday night's 8.2-magnitude quake, in Juchitan, Oaxaca, Mexico, on September 10, 2017. Rescuers pulled bodies from the rubble and grieving families carried coffins through the streets Saturday after Mexico's biggest earthquake in a century killed 65 people. AFP/ Ronaldo Schemidt

Mexican soldiers unload water in Juchitan de Zaragoza, state of Oaxaca on September 10, 2017, for those affected by the 8.2 magnitude earthquake that hit Mexico's Pacific Coast on September 8. Mexican families picked nervously at the ruins of their homes Sunday as help trickled in after a huge earthquake killed 90 people. People in Juchitan were afraid to return to their homes, fearing the effects of hundreds of aftershocks -- but camped within sight of them to prevent l...

View of a collapsed hotel in Juchitan de Zaragoza, state of Oaxaca on September 10, 2017, following the 8.2 magnitude earthquake that hit Mexico's Pacific Coast on September 8. Mexican families picked nervously at the ruins of their homes Sunday as help trickled in after a huge earthquake killed 90 people. People in Juchitan were afraid to return to their homes, fearing the effects of hundreds of aftershocks -- but camped within sight of them to prevent looting. AFP/ Ronaldo Sch...

Local residents search for belongings amid the ruins of their home, knocked down by Thursday night's 8.2-magnitude quake, in Juchitan, Oaxaca, Mexico, on September 10, 2017. Rescuers pulled bodies from the rubble and grieving families carried coffins through the streets Saturday after Mexico's biggest earthquake in a century killed 65 people. AFP/ Ronaldo Schemidt

Rescuers search for survivors amid houses knocked down or severely damaged by Thursday night's 8.2-magnitude quake, in Juchitan, Oaxaca, Mexico, on September 10, 2017. Rescuers pulled bodies from the rubble and grieving families carried coffins through the streets Saturday after Mexico's biggest earthquake in a century killed 65 people. AFP/ Ronaldo Schemidt

Local residents stand outside their home, severely damaged by Thursday night's 8.2-magnitude quake, in Juchitan, Oaxaca, Mexico, on September 10, 2017.Rescuers pulled bodies from the rubble and grieving families carried coffins through the streets Saturday after Mexico's biggest earthquake in a century killed 65 people. AFP/ Ronaldo Schemidt