An earthquake hit Las Choapas, in the Mexican state of Veracruz at 13:11 GMT, and was recorded at a depth of 167 km and at a force of 6.5 on the Richter scale. (Later upgraded to 6.7 by the Servicio Sismológico Nacional.) It apparently caused no damages but it was felt in several cities; in Mexico City people left their buildings to investigate.

In the meantime a 7.1-magnitude earthquake has also struck beneath the sea east of Japan, in the region affected by the recent earthquake and tsunami. It was strongly felt on land and disrupted the electricity supply to the Onagawa nuclear power plant, but the tsunami warning was cancelled soon.

"Temblor de 6.5 grados sacude la Ciudad de México [El Universal]" by eca (April 7, 2011)
"Sismo fue de 6.7 grados, corrige Sismológico" [El Universal] by sma (April 7, 2011)
"Japan hit by new earthquake" [Guardian] by James Meikle (April 7, 2011)