"There doesn't appear to be any outstanding motive right now," Jansing said, adding that the shooter did not try to rob Riley.
SAN FRANCISCO — A friend told FOX25 that the family moved to California five years ago because Riley's father got a job as a baseball coach.
A GoFundMe for Riley's funeral expenses had raised more than $35,000 late Sunday.
"Calvin Riley, you were my best friend," Gabriel Antonio Morales wrote in the GoFundMe campaign's description. "Nothing in the world will top the good times we've had together. You were more than a cousin/best friend to me, you were my brother."