A Saturday shaker in central Oklahoma

Three miles down, the earth rumbled just before 6 O'clock Saturday morning.

The US Geological Survey says yet another earthquake shook central Oklahoma early this morning, near Prague. The quake was pegged at 3.3. There are no reports of damage or injury.

There has been a series of earthquakes in the region, including the state's largest ever quake  last November. It registered 5.2.