PHELAN, Calif. (KABC) -- A 10-year-old boy is in the hospital after being shot in the head on the 15 Freeway in Phelan Thursday night.California Highway Patrol officials said the shooting happened shortly after 9 p.m. on the northbound 15 at Cleghorn Fire Road.Someone fired an unknown number of rounds at a BMW 5-series. One of the rounds traveled through the BMW's small rear window and struck the head of the young boy, CHP officials said."While they were driving up the freeway, they heard a loud gunshot," said the boy's uncle, who identified himself as Alex. "Everybody was asleep in the car. They pulled over and said 'Are you guys OK?' My nephew, he was unconscious."The child was transported to a local hospital with serious injuries. CHP officials said the injuries were not considered life-threatening.The driver of the BMW pulled off the freeway to call 911."There doesn't appear to be at this time a motive for the actual shooting," said CHP Assistant Chief Scott Parker.Investigators have recovered bullet fragments from inside the vehicle.No arrests have been made and officials are still working to determine a description of a suspect and vehicle.Anyone with information is urged to contact San Bernardino CHP Area Officer E. Brewer at (909) 383-4247.