PERRY, Oklahoma — An earthquake centered near Perry has shaken parts of north central Oklahoma.
The U.S. Geological Survey says the 3.4 magnitude temblor was recorded shortly after 6 a.m. Sunday less than six miles northeast of Perry in Noble County. The earthquake occurred at a depth of about three miles.
Authorities say no injuries or damage was reported following the quake.
Geologists say earthquakes of magnitude 2.5 to 3.0 are generally the smallest that are felt by humans and that damage is not likely from earthquakes of below magnitude 4.0.
Geologists are investigating whether an increase in earthquakes in Oklahoma and nearby states in recent years is connected to the oil and natural gas drilling method known as hydraulic fracturing, especially the wells in which the industry disposes of its drilling wastewater.