A 6.1 magnitude earthquake rocked Haiti Wednesday morning, shaking buildings and sending panicked people running into the streets only eight days after the country's capital was devastated by a previous quake.

The U.S. Geological Survey said the quake hit at 6:03 a.m. about 35 miles west of the capital, near the town of Petit Goave. It struck at a depth of 13.7 miles but was located too far inland to generate any tidal waves in the Caribbean.

Wails of terror rose Wednesday from frightened survivors who are still coping with the cataclysmic aftermath of the 7.0-magnitude quake that struck Jan. 12.

The aftershock Wednesday appears to have shaken free debris across the city.

In the neighborhood of Canopevert, chunks of concrete spilled onto a road, shutting it off -- and burying a man briefly before neighbors pulled him free.

At a small clothing store downtown, the quake exposed a trove of packaged clothes, triggering a frenzied wave of looters. Haitian police chased them off at least three times.

"It's not their fault. They have to steal it," said William Dejene, 15.

It was not immediately possible to ascertain what additional damage the new quake may have caused, but humanitarian agencies have reported extensive damage to cities outside Port-au-Prince.

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