A 7.2-magnitude earthquake struck the Pacific coast of Mexico Friday, leaving about one million homes and businesses without power.
No one was killed by the initial quake, but 13 people died and several more were injured when a military helicopter crashed onto two vehicles while surveying the damage. Mexico's interior minister and the governor of the state of Oaxaca were both in the helicopter when it went down, but neither was injured.
Friday's earthquake was unusually long, and it was followed by 225 aftershocks. It comes less than half a year after a September quake killed more than 300 people in Mexico City and surrounding areas. Many Mexico City residents were heard repeating, "Oh God, not again," while Friday's tremors hit.
This is a breaking news story and has been updated throughout.