Four people are dead and two injured following seismic activity this morning in the Isthmus of Tehuantepec region of Oaxaca.
Two women, aged 52 and 80, died in Mexico City of heart attacks presumably brought on by a 6.1-magnitude earthquake.
Two more people died in the Isthmus town of Asunción Ixtaltepec. One lost his life after being attacked by a swarm of bees that had been disturbed by the quake. The second was a woman who died when a wall collapsed.
Injuries occurred in Juchitán after the collapse of buildings that had been damaged in the 8.1-magnitude earthquake on September 7, according to Civil Protection authorities.
Mayor Gloria Sánchez said eight previously damaged houses collapsed this morning.
A building housing a business near the municipal palace was also destroyed, according to preliminary reports.
The Federal Electricity Commission (CFE) said the quakes had interrupted electrical service to 327,000 homes and businesses in the state but service had been restored to 72% of them by 10:43. CFE head Jaime Hernández said on Twitter that damages were being assessed at two substations.
A bridge in Ixtaltepec that had been damaged on September 7 sustained further damages. Communications and Transportation Secretary Gerardo Ruiz Esparza tweeted this morning that the structure would have to be rebuilt.
There were three earthquakes in the region this morning, all over 5.0. The first, at 7:52, was also the strongest at 6.1, with an epicenter seven kilometers from Unión Hidalgo.
UPDATED 6:20pm: The original story has been edited to include information about the two deaths in the Isthmus region.