An earthquake measuring 6.4 on the Richter scale shook the Island of Puerto Rico on Monday.

According to the Associated Press, some residents reported items falling in their homes and dozens said they felt buildings shake in the capital city of San Juan.

Manuel Rivera of Noticel.com told CBS4 Miami that he felt the powerful quake just after midnight.

“I was in my bed and suddenly everything started to shake. The shaking lasted for more than 30 seconds,” said Rivera.

He also said that on social media residents of San Juan’s upscale Condado district reported buildings swaying there.

Puerto Rico's emergency management agency said there was no tsunami warning issued and no injuries to report.

Every year approximately 800 seismic events occur in the Puerto Rico region and while most are never felt or noticed, a large quake could hit the American Territory at any time. FEMA reminds everyone in the event of an earthquake to drop to the ground, take cover and hold onto items around you. And in the event of a tsunami, to keep calm and move to higher ground that is at least 100 feet in elevation and one mile inland.