A magnitude 5.9 earthquake struck off the Mexican west coast on Sunday, the Pacific Tsunami Warning Center said.
The epicentre of the quake was 99 km south-southwest of Tonala, in Chiapas state.
Mexico’s capital was shattered by a magnitude 7.1 quake on Tuesday that flattened dozens of buildings and killed at least 307 people.
A magnitude 6.2 aftershock also shook Mexico on Saturday which was blamed for five deaths, spreading fear among anxious residents reeling from a string of natural disasters and interrupting the search for survivors from a bigger tremor earlier this week.
The Popocatepetl volcano south of Mexico City sent a column of ash into the sky, capping an intense period of seismic activity including two powerful tremors this month that have killed more than 400 people and caused damage of up to $8 billion.