A 6.7-magnitude earthquake has hit Ecuador near the Pacific coast area where a devastating quake struck on April 16.
The US Geological Survey said the earthquake's epicentre was 21 miles from the town of Rosa Zarate.
The much larger magnitude 7.8 earthquake killed 660 people and left tens of thousands homeless.
Ecuador was already struggling economically before the disaster in April.
President Rafael Correa has increased taxes to fund the recovery but says it will take years to rebuild the beach towns and tourist hubs devastated by the earthquake.