They say it happened in the 15-hundred block of Fillmore around 8:15 this morning.
A man and his nephew, later identified as Oscar Garcia, got into an argument that continued in the front yard of their home.
And, that's when police say 41-year-old Garcia began hitting his uncle with a hammer.
The victim was taken to the hospital with head, chest, and arm injuries.
Garcia is charged with aggravated assault family violence and he's in the Wichita County Jail.
Orientation begins today for I.D.E.A. Wichita Falls and it's your…
Crime Stoppers needs your help tracking down the burglar or burglars…
Come tour the brand new school in Archer City housing the Junior High…