An earthquake struck off the southeast coast of Taiwan on Monday, causing buildings to sway briefly but no casualties or damage. The temblor was felt at the site of a massive landslide in northern Taiwan but did not hamper rescue efforts.

The 6.5-magnitude quake hit at 10:59 a.m. (0259 GMT), 195 miles (295 kilometers) off the southern Taiwan city of Taitung at a depth of 6.2 miles (10 kilometers), the U.S. Geological Survey said. The agency's initial report had put the quake's magnitude at 6.9.

In Taipei, buildings swayed for up to 20 seconds when the quake hit, but police said there were no reports of casualties or damage anywhere on the island. No tsunami alert was issued.

Earthquakes frequently rattle Taiwan but most are minor and cause little or no damage. However, a 7.6-magnitude earthquake in central Taiwan in 1999 killed more than 2,300 people.