Cheryl MacWillie of the Los Angeles County Department of Coroner.
The fatal accident happened Wednesday when the boy went down a hill on a bicycle, fell and suffered what appeared to be only minor abrasions.
was going down a hill on his
bike and lost control," MacWillie
complained of pain and fell asleep," she
said, reviewing a report prepared by a coroner's investigator.
"The investigator says he
was not wearing a helmet," she