PAWNEE, Oklahoma - Pawnee's mayor says at least one downtown historic building sustained significant damage after a magnitude 5.6 earthquake Saturday morning.  

Mayor Brad Sewell says the quake caused cracks and sandstone to fall from the building on the town's square and a Pawnee grocery store saw a number of items fall off shelves.  

The U.S. Geological Survey reports the quake struck at 7:02 a.m. about nine miles northwest of Pawnee.  The  U.S.G.S. also reports a 3.6 magnitude aftershock in the same area at 7:58 a.m. 

Sewell says they are now going to inspect the building to determine if they safe.  

Authorities reported at least one injury from the earthquake.  That injury happened just outside of Pawnee when a man protecting a child had bricks from a chimney fall on hit him on the head.

Governor Mary Fallin says the Pawnee Nation has six buildings that are uninhabitable at this time. And three homes in rural Pawnee County were damaged.

Fallin says the Oklahoma Department of Transportation has completed its first inspection of state highway and Oklahoma Turnpike bridges and has found very minor issues.