A 3.0-magnitude earthquake has shaken parts of central Oklahoma.
The US Geological Survey says the quake was recorded at 1:50 pm (local time) Sunday about 15 kilometres north-northwest of Langston, which is about 69 kilometres north-northwest of Oklahoma City. The temblor was recorded at a depth of about 5.5 kilometres.
No injuries or damage were reported. Geologists say damage is not likely in earthquakes below magnitude 4.0.
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. Scientists have also linked earthquakes in Kansas, Texas and other states to wastewater injection.
Oklahoma regulators have directed several oil and gas producers in the state to close injection wells or reduce volumes.