An earthquake with a 6.4 magnitude struck just after midnight in Puerto Rico early Monday, in one of the country's largest to hit the territory in recent years, as reported by The Associated Press. While it caused some power outages, no major damages or injuries were reported in the earthquake, which hit about 35 miles north of Hatillo, at a depth of 17, according to the U.S. Geological Survey, as also reported by The AP.

There have been at least 70 aftershocks have been reported, with at least 3.5 or greater, according to geologist Gisela Baez Sanchez.

"The earthquake occurred at 12:01 a.m. local time and was centered about 96 km (60 miles) northwest of the capital of San Juan. The earthquake was felt across Puerto Rico and parts of the Dominican Republic," as reported by accueweather.com.

"All of Puerto Rico is in a seismic danger zone. We have to be prepared," said Baez Sanchez.

The epicenter for the quake was in the Atlantic about 60 miles northwest of San Juan, CNN reported.

There also have been no reports of a tsunami. "The National Weather Service in San Juan said... that there was no threat for a tsunami after reviewing tidal gauges following the quake. There have also been no reports of any injuries," as reported by accuweather.com.