The U.S. Geological Survey reports a moderate earthquake in northwestern Oklahoma.
The USGS recorded a magnitude 3.6 quake at 11:27 p.m. Sunday in Major County near the town of Meno, about 75 miles northwest of Oklahoma City.
No injuries or damage are reported.
Thousands of earthquakes recorded in Oklahoma in recent years have been linked to the underground injection of wastewater from oil and gas production.
Geologists say about 200 quakes of magnitude 3.0 or stronger were recorded in Oklahoma last year, down from 302 in 2017 and the third consecutive year of declines since regulators began directing producers to close some wells and reduce injection volumes in others.