SAN JUAN, Puerto Rico — A 5.0 magnitude earthquake hit southern Puerto Rico on Saturday at a shallow depth, raising concerns about unstable infrastructure in a region that has been hit by quakes daily for nearly a month.

The U.S. Geological Survey said the quake occurred at a depth of eight miles (13 kilometers) in the town of Guayanilla, located close to the epicenters of most of the recent earthquakes.

The newest quake comes a day after hundreds of people were evacuated from earthquake shelters that flooded following heavy rains that hit the U.S. territory.

RELATED: Ohio Air National Guard deploys to Puerto Rico to assist earthquake victims

RELATED: Puerto Rico seeks more help from US after damaging quake

RELATED: 2 more Puerto Rico officials fired after warehouse break-in

RELATED: Puerto Rico disaster relief help sought across Western New York

Puerto Rico Earthquake