So far, the National Seismological Institute has reported 225 aftershocks, causing greater stress and fear among the affected population.
Twelve died at the crash site, while one died later at the hospital, the state attorney general's office said.
Standing in the middle of the street, her eyes glued to her fifth-floor apartment, Graciela Escalante, 72, could hardly speak. Her eyes were wide, like plates.
"Is it ever going to stop?" she said.
Gutierrez managed to leave her ground-floor apartment before the quake began.
"I'm scared", Ms Rojas Huerta said.
A helicopter carrying senior officials has crashed while they assessed damage from Friday's Mexican quake, killing at least 14 including a baby.
A TV reporter who traveled with the minister said that the helicopter suddenly fell after lifting a large cloud of dust over the landing. The epicentre was near the town of Pinotepa de Don Luis.
The quake comes just months after another powerful and similarly sized quake hit Mexico City.
The pilot lost control as the helicopter was coming in to land, crashing on top of two vans in a field not far from the epicenter of the natural disaster, the BBC reported.
Damage near the epicenter was a given, Pursley said. The natural disaster was so strong that the tremors were felt as far away as Guatemala.
Local media reports out of Oaxaca showed a partially collapsed hotel and other buildings with partially collapsed roofs or walls split open by deep fissures.
The 7.2 tremor triggered the capital's quake alarm system and left buildings swaying for over a minute.
The Popocatepetl volcano south of the capital sent a kilometer-high column of ash into the sky, said Mexico's disaster prevention agency.
People comfort one another in the aftermath of the natural disaster.
Trees, overhead cables and cars swayed, and a fire truck raced down the street.
"It lasted a long time, but it wasn't as strong", Barreno said.