The U.S. Geological Survey says a 4.3-magnitude earthquake struck extreme northern Oklahoma late Monday and was widely felt throughout parts of Kansas. No injuries or damage were reported.
The earthquake was centered near the town of Wakita, which is right on the state's border with Kansas and is about 100 miles north of Oklahoma City. The USGS says the quake was felt in Wichita and other parts of Kansas.
Scientists have linked Oklahoma's sharp increase in earthquakes to the underground injection of wastewater by oil and gas companies. State regulators have asked companies in earthquake-prone areas to reduce the volume of wastewater or shut down the wells altogether.
Earlier this month, a 5.8-magniutde earthquake struck Oklahoma, making it the strongest on record in the state.