It happened on Parker Road near Parkertown Road while several children were playing in the yard outside a home.
An adult outside told the Johnston County Sheriff's Office they heard a "whizzing" sound, according to the JoCo Report, and moments later, a child had a gunshot wound to the leg.
The child was rushed to a hospital for treatment of serious but non-life-threatening injuries.
A house was also hit by gunfire.
On Monday, investigators said that someone who was taking target practice nearby fired the shots that struck the child and the home.
The incident remains under investigation.
ALSO SEE | NC 16-year-old killed, passenger injured in Johnston County crash after chase with NCSHP