A magnitude 5.3 earthquake and a slightly weaker one shook Puerto Rico early on Saturday, but there were no immediate reports of damage or casualties.

The epicentre of the stronger quake was 8 miles (13 km) westnorthwest of Puerto Real on the Caribbean island's west coast at a depth of 14.4 miles (23.2 km), the U.S. Geological Survey said. A weaker quake of 5.1 magnitude struck the same area three minutes earlier.

The tremor was felt at a hotel on the northwestern coast of Puerto Rico, said Jose Caro, an employee at Marriott Courtyard Aguadilla.

"Everything is OK. Some people went out of their rooms, but everything is back to normal," said Caro, reached by phone from Washington.

The quake was not strong enough to create a tsunami, the U.S. West Coast and Alaska Tsunami Warning Center said.

Officials in Puerto Rico, a U.S. territory in the Caribbean Sea, could not immediately be reached.

Source: Reuters