From the article:
The 15-year-old victim was walking down the street when he heard a gunshot, then realized he had been shot in the ankle, according to police.
The victim saw three males fleeing in a blue car. They had not been found as of this morning.
He was taken to San Francisco General Hospital to be treated for his injury, police said.
The article didn't speculate if the boy was an intended target or was hit by a stray bullet.