Authorities say a Los Angeles police officer shot and wounded a 15-year-old boy in the back after spotting him in an alley standing near someone holding what appeared to be a gun.

Sgt. Frank Preciado said early Thursday that what the officer thought was a weapon turned out to be a replica handgun.

The boy was transported to a hospital and released to his mother the same day.

Two officers spotted a teenager pointing what they thought was a gun at another person Tuesday morning.

Preciado says officers ordered the boy to drop the weapon. When he didn't comply, one of the officers opened fire.

The teen holding the replica weapon wasn't hurt, but the boy standing next to him was struck.

No arrests have been made.