A new earthquake with a magnitude of 6.1 has hit Mexico, just days after another devastating tremor left 295 people dead.
The US Geological Survey said it was centered about 11 miles (18km) south-southeast of Matias Romero in the southern state of Oaxaca.
Details on damage or injuries are not immediately clear.
Buildings swayed and a seismic alarm was set off in the capital, Mexico City, where rescuers have been trying to reach people who remain buried in rubble from Thursday’s quake.
Those rescuers have been forced to suspend their efforts.
“I heard the alarm and ran downstairs with my family,” sAlejandra Castellanos, who was staying in a hotel in the area with her husband, said she was “frightened” when she felt the earth shake for the second time in two weeks.
“I was frightened because I thought, not again!,” she said.
Southern Mexico was hit on 7 September by a huge magnitude of 8.1 tremor.
The total death toll from the first two earthquakes is thought to be over 400.aid Sergio Cedillo, a resident who was watching rescue efforts to find survivors when the alarm sounded.