Fuchs was shot in front of his home in Danville Tuesday night. His parents thought he was in the house, but they found him slumped in the front doorway with a gunshot to the neck. He died the next morning at John Muir Hospital.
Until recently, the suspect lived in a group home in Danville, not far from Fuchs' home.
The suspect was a freshman at San Ramon Valley High School last spring and resumed classes there in September, before transferring to Monte Vista High School and then out of the area.
Danville police told Fuchs' parents the two teenagers may have fought over a drug transaction.
"To have this happen over some marijuana is unbelievable; kids do experimentation, I understand that, but to get killed over it," Fuchs' mother Karen Williams said.
The Upright Treatment Center, where the suspect lived, is a 6-bed facility contracts with Alameda County to receive boys just released from juvenile hall.
The director of the group home said the suspect was not a violent individual and the director was surprised when police came looking for the young man.
ABC7 has also learned at least one teenager from the same group home was disciplined last year for an attempted sexual assault on a female student at San Ramon Valley High School.
After Rylan Fuchs was shot, his friends say they received a taunting text message. It is not clear whether it came from anyone connected with the 15-year-old suspect, but it read: "If you play with fire, you're going to get burned."
