The U.S. Geological Survey says the 6.2 magnitude aftershock struck Pakistan's Baluchistan province Wednesday afternoon local time. There were no immediate reports of casualties or damage from the tremor.
A stronger, 6.4 magnitude quake hit the same region near Pakistan's border with Afghanistan before dawn Wednesday. Its epicenter was in Ziarat, a mountainous district and major tourist site.
The quake destroyed mud homes and triggered landslides in several villages as people slept. Officials say at least 160 bodies have been recovered from the rubble, and they expect the figure to rise.
Officials estimate that at least 12,000 people have been left homeless.
Panic-stricken survivors gathered in the chilly weather to wait for assistance. Pakistan's military says it is sending tents and field hospitals to the affected areas.
Fatalities also were reported in Baluchistan's Pishin district.
A strong earthquake hit northwestern Pakistan in October of 2005, killing nearly 75,000 people.
Some information for this report was provided by AP and Reuters. By VOA News.
