NEW CASTLE (AP) - The state Department of Environmental Protection is investigation whether fracking contributed to two small earthquakes near a western Pennsylvania drilling operation.

DEP spokeswoman Melanie Williams says Hilcorp Energy Co. stopped fracking at the Mahoning Township site on about noon Monday. That was about 12 hours after the U.S. Geological Survey recorded a 1.9-magnitude earthquake and about 10 hours before another quake of the same size was recorded.

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