The United States Geological Survey (USGS) said that two earthquakes of the same 6.3 magnitude struck on Monday off the coast of Haiti and the northern part of Isabela in Puerto Rico, Trend reports citing Sputnik.
There were no immediate reports of casualties or damage from the earthquakes, which the USGS said hit at a depth of 10 km (6 miles) about 80 km (50 miles) from the northwestern coastal town of Isabela.
Local authorities have not issued a tsunami warning.
In January 2010, Haiti was hit by a devastating earthquake which resulted in over 200,000 deaths and injured more than 300,000. The situation was worsened by tropical storms, and subsequently by a cholera epidemic.