A 6.2 magnitude quake shook Ecuador's already devastated Pacific coast before dawn on Wednesday, terrifying residents and hindering rescuers searching for survivors of Saturday's even bigger quake which killed more than 500 people.
The latest big tremor, which followed several hundred aftershocks from Saturday's 7.8 quake, hit 25 km (15 miles) off the island of Muisne on the northwest coast at a depth of 15 km (9 miles), the US Geological Survey said.
That was near the epicenter of the weekend's major quake, which leveled a long swath of the coastline and dealt a major blow to the oil-producing nation's already fragile economy.
To help fund a long, multibillion-dollar reconstruction, Ecuador may issue bonds on the international market, President Rafael Correa said on Wednesday.
Meanwhile, already shaken Ecuadoreans were woken up by two strong tremors of about 30 seconds each on Wednesday, sending residents running into the street.