Dallas police said a 16-year-old boy who died in crash Tuesday night was street racing.
Colin Stone died after crashing a BMW on Northwest Highway at Shady Brook Lane shortly before 9 p.m.
Police said the high school junior was racing at more than 100 mph against another BMW.
Investigators said Stone's car started spinning before it jumped the median and hit four other cars.
Three other people in one of the vehicles, a Volvo, were taken to a local hospital with minor injuries.
"When you look at the pictures of the vehicle, it's a miracle that nobody was seriously injured in that Volvo," Sgt. Fred Katani said.
Stone was pronounced dead at the scene.
Police are looking for the other driver, who fled the scene. The driver would face a charge of second-degree felony racing causing death.
Investigators said before the crash Stone was at a swim meet at the Knights of Columbus, a Catholic community center a few miles away from the scene of the crash.
Stone's family and friends said they were stunned by his death.
"We are devastated by the loss of Colin, and it goes without saying that he will be greatly missed," his father, Taylor, said in statement Wednesday. "He leaves behind his parents and three sisters, a loving family and many friends. We have no other comments at this time, and we ask that you would please give our family space and time to grieve in private."
Father Peter Verhalen, the headmaster of Cistercian Preparatory School in Irving, said Colin Stone's death was a shock.
"I can't understand it," he said. "Colin was beloved. The juniors -- his classmates -- were recalling just this morning his smile."
NBC 5's Ellen Goldberg and Julie Tam contributed to this report.