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A small earthquake struck near Azle on Saturday afternoon.

The United States Geological Survey reported the 2.2-magnitude tremor hit three miles east-southeast of Azle at 2:55 p.m., with the epicenter under Eagle Mountain Lake.

In the past 30 days, there have been three larger earthquakes ranging from 2.8 to 3.3-magnitude in the same general vicinity.

On Tuesday, the Texas Railroad Commission, which regulates drilling statewide, announced it was hiring a seismologist to investigate a sudden increase in earthquakes near areas with significant oil and gas drilling activities.

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