Another earthquake near Oklahoma City

(AP) _  A small earthquake has shaken part of Oklahoma.

The U.S. Geological survey says the earthquake happened just before 5 a.m. Saturday. Its epicenter was about 15 miles east of Oklahoma City.

The USGS website says the earthquake measured a 3.4 on the Richter scale. People have reported feeling it up to 21 miles away in Edmond.

No damage was immediately reported.