KNOXVILLE, Tenn. (WATE) — A second 15-year-old has been charged with first-degree murder in the shooting death of an 18-year-old in late October in the Mechanicsville area of Knoxville.

The shooting took place along Cansler Avenue near Wallace Street on Oct. 25. Police say the victim, 18-year-old Junior Santiago, was found dead inside of an overturned vehicle on Cansler Avenue after he had been shot at least once.

A 15-year-old was taken into custody the following day and charged with juvenile petition for possession of a weapon with intent to go armed. Investigators said additional charges were pending.

The second 15-year-old is facing a charge of first-degree murder, according to a Knoxville Police spokesperson.

According to a juvenile petition, the two suspects attempted to rob Santiago during a sale of marijuana. One of the suspects fired his weapon striking the Santiago in the side of the face. He then started driving away firing his weapon back at the suspects, who returned fire and struck the car multiple times.

The car driven by Santiago crashed and he was pronounced dead from gunshot wounds.

The identities of the suspects are being withheld due to their age.