A four-year-old girl who was “playing with knives” along with a nine-year-old boy stabbed the older child in the head and back today, according to Florida police.

The victim was flown by helicopter (seen above) to a hospital for treatment of injuries that cops said are not believed to be life threatening.

According to investigators, sheriff’s deputies responded around 2:25 PM to reports of a stabbing at a residence in Port St. Lucie. 

When cops arrived at the home, they found five juveniles--ages three to nine--in the residence, but no adults were present at the time of the stabbing incident.

Officers determined that the nine-year-old was “stabbed in the head and back area” by the girl. The children, cops say, were “playing with knives.”    

The incident remains under investigation by Port St. Lucie Police Department detectives.