A moderate 5.7-magnitude earthquake hit the Pacific nation of Vanuatu on Monday, shaking buildings and scaring tourists but causing no significant damage.

The US Geological Survey said the undersea quake struck 67 km west of the capital Port Vila at a depth of 51 km. It initially put the magnitude at 6.2. A policeman in Port Vila said that there had been no reports of injury or serious damage, and the Pacific Tsunami Warning Center based in Hawaii did not issue a tsunami alert.