One minor injury has been reported as the result of a 5.6 magnitude earthquake in north-central Oklahoma. Pawnee County Emergency Management Director Mark Randell says a man protecting his child suffered a head injury when part of a fireplace fell on him. Randell says the man was treated at a hospital and released. The U.S. Geological Survey reports the quake struck at 7:02 a.m. about nine miles northwest of Pawnee, a town of about 2,200 about 70 miles northwest of Oklahoma City. The USGS also reports about a half-dozen aftershocks in the same area, including one that was a 3.6 magnitude at 7:58 a.m.