Two teenagers were booked into detention after a gang-related shooting that injured an 18-year-old male near West High School Thursday.

The incident began earlier in the morning when a 14-year-old left his house and was walking to school when the occupants of a car drove by and flashed gang symbols at him. The boy, threatened by the gestures, returned to his home and got a .25-caliber handgun and took it to school, said police Lt. Marty Vuyk.Shortly after 10 a.m., the boy and a 17-year-old girl, who then had possession of the handgun, were walking near the high school on 300 West when the same car approached and gang symbols were exchanged again.

Witnesses told police the boy took the gun and shot one of the occupants of the car, who had gotten out of the vehicle. The victim was hit in the arm by a single bullet just above the elbow. He was treated at Holy Cross Hospital and released, Vuyk said.

A police officer who was nearby heard the shot but thought it was a vehicle backfiring until the victim and another male ran up to the officer and told him about the shooting, according to a police report.

Both the 14-year-old boy and 17-year-old girl were booked for investigation of aggravated assault charges.