An earthquake has shaken parts of northern Oklahoma.
The U.S. Geological Survey says a 3.5 magnitude earthquake was recorded at 2:35 a.m. about 12 miles west of Perry in Noble County. The earthquake was recorded at a depth of about one mile.
No damage or injuries were reported. Geologists say damage is not likely in quakes below magnitude 4.0 and that earthquakes of magnitude 2.5 to 3.0 are generally the smallest that are felt by humans.
Thousands of earthquakes have been recorded in Oklahoma in recent years, with many linked to the underground injection of wastewater from oil and natural gas production operations.
State regulators have directed oil and gas producers to close some disposal wells or reduce the volume of fluids they inject in others.