A series of earthquakes has shaken parts of north-central Oklahoma.
The U.S. Geological Survey says two earthquakes were recorded Saturday near Pawnee in Pawnee County and a third in Yale in Payne County. The earthquakes were recorded in the same area where a record-setting 5.8 magnitude earthquake occurred two months ago.
Geologists say a 3.7 magnitude earthquake was recorded shortly before 4:40 a.m. about eight miles east-southeast of Pawnee. A 2.9 magnitude temblor was recorded about 10:40 a.m. one mile east of Pawnee, and a 2.8 magnitude quake occurred shortly before 7 a.m. about nine miles west-northwest of Yale.
Scientists have linked Oklahoma's increase in earthquakes to the underground disposal of wastewater from oil and gas production. Regulators have ordered some disposal well operators to close or reduce disposal volumes.