An earthquake measuring 6.8 in magnitude left buildings shaking in Mexico City this morning.
People scrambled into the streets as dogs barked and an alarm sounded after the huge tremor struck in the early hours of Thursday.
It comes just days after another strong quake killed two people and damaged hundreds of buildings in the North American country.
Mexico City Mayor Claudia Sheinbaum said on Twitter on Thursday morning that there were no initial reports of damage in the city.
Resident Shikha Panchhi shared a video inside her home showing a ceiling light swinging from side to side.
The quake, which the U.S. Geological Survey (USGS) first measured at magnitude-7.0, was registered at a depth of 20.7km (12.9 miles), slightly deeper than Monday's temblor.
Have you been affected by this incident? Let us know at webnews@mirror.co.uk
No Tsunami warning was issued after the earthquake, the U.S. Tsunami Warning System said.
On Monday, the anniversary of deadly earthquakes in 1985 and 2017, a magnitude 7.6 earthquake hit western Mexico, killing two in the Pacific port of Manzanillo.
It also saw people flood into the streets in the capital for safety, after power was knocked out.
Laura Velazquez, the head of Mexico's civil protection agency, said the two deaths were due to the partial collapse of buildings.
One of the victims was crushed by the front of a department store in Manzanillo and the other was found dead inside a shopping centre in the same port city in the state of Colima.
Ten other people were reportedly injured - including one in neighbouring Michoacan.
In between the two earthquakes, there have been at least 692 aftershocks recorded, with the strongest being a magnitude 5.8 on Tuesday morning.
US Geological Survey seismologist Paul Earle said: "There's no physical reason or statistical bias toward earthquakes in any given month in Mexico."
Seismology researcher Xyoli Perez-Campos said: "The plates break when it's their time to break. What are they going to know about the calendar?"
