(CNN) -- A magnitude 6.8 earthquake struck just off Colombia's Pacific coast late Sunday, the U.S. Geological Survey reported, but there were no immediate reports of injuries.
Power outages were reported in at least three cities in the area, but there was no sign of widespread damage, Colombian authorities reported.
The epicenter of the quake about 295 miles (480 kilometers) west-southwest of Bogota and about 220 miles north of Quito, the capital of neighboring Ecuador, according to the USGS. It hit at 8:49 p.m. (0149 GMT), the agency reported.
The region has been hard-hit by earthquakes in the past. In January 1999, a magnitude 6 quake killed nearly 900 people and left 200,000 homeless in western Colombia -- and as recently as mid-August, a magnitude 8.0 quake killed more than 500 people in neighboring Peru. E-mail to a friend
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Shake map of the quake.
According to the United States Geological Survey (USGS) a magnitude 6.8 struck just of the coast of Colombia at 01:49 (UTC) with a depth of 10 kilometers (6.2 miles). The epicenter was located 150 km (95 miles) north, northeast of Tumaco, Colombia. 

There are reports of power outages in some cities, but there are no reports of damage to buildings, deaths or injuries. The USGS says that some "moderate" damage may exist near the coastline of southwest Columbia.

The National Oceanic and Atmospheric Administration (NOAA) has not issued a tsunami warning saying there is "no destructive widespread tsunami threat based on earthquake historical data," but that "small waves could be generated locally."