SANTIAGO - A powerful 6.5 magnitude earthquake struck near the Chilean capital Santiago on Tuesday, the U.S. Geological Survey said.

The quake, which the USGS initially measured at a magnitude of 6.6, struck 30 miles (48 km) north-northeast of the main port of Valparaiso, and 72 miles (116 km) northwest of the capital Santiago at a depth of 16.1 miles (25.9 km), it said.

There were no initial reports of damage or injuries.

The USGS initialy said the quake struck at a depth of 41.9 miles (67.4 km).??