LUTHER, Okla. (AP) - Central Oklahoma was rattled Wednesday morning by an earthquake, but there are no immediate reports of damage or injuries.
 
The U.S. Geological Survey says the earthquake had a preliminary magnitude of 4.0. It struck shortly after 6 a.m. and had in epicenter in Luther, or about 23 miles northeast of Oklahoma City.
 
The USGS says the earthquake was widely felt in central Oklahoma and as far north as Wichita.