(CNN)A 6.0-magnitude earthquake shook Puerto Rico Monday night, striking off the coast of the island in the Atlantic Ocean.

The quake hit about 49 miles north-northwest of Isabela, Puerto Rico, around 11:23 p.m. ET, according to the United States Geological Survey.At least three aftershocks have followed the quake including a magnitude 4.7, USGS said.Puerto Rico Governor Wanda Vázquez Garced said in a tweet that there was no damage.There is no threat of tsunami from the quake, according to a tweet from The National Weather Service Pacific Tsunami Warning Center.Read MoreThis is a developing story and will be updated as more information is available.

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