The Immaculate Concepcion Catholic church lies in ruins after an overnight earthquake in Guayanilla, Puerto Rico, Tuesday, Jan. 7, 2020. A 6.4-magnitude earthquake struck Puerto Rico before dawn on Tuesday, killing one man, injuring others and collapsing buildings in the southern part of the island. (AP Photo/Carlos Giusti)

World – Puerto Rico Governor Wanda Vazquez declared a state of emergency and activated the National Guard on Tuesday after a series of earthquakes including one of magnitude 6.4 that was the most powerful to strike the Caribbean island in 102 years.

The temblors killed at least one person, provoked a protective power outage across the entire island and cut off drinking water to 300,000 customers, Vazquez told a news conference, where she also announced the emergency measures.

At least 346 people were left homeless, officials said.

The declaration of emergency will facilitate financial aid for the U.S. territory, and Vazquez said she had already been in contact with the U.S. Federal Emergency Management Agency.

The island has been rocked by a series of quakes – literally hundreds – since Dec. 28, including 10 of magnitude 4 or greater, the U.S. Geological Survey said. A 5.8-magnitude temblor on Monday damaged some homes on the southern coast.