Two children were killed and eight others were injured at a Texas drag racing event when a driver lost control of his vehicle and crashed into a crowd of spectators on Saturday.

Two boys, ages 6 and 8, died at a popular afternoon event called “Airport Race Wars 2” that attracted thousands to the Kerrville-Kerr County airport, the Kerrville Police Department said in a statement Saturday night.

a driver was speeding down the runway when he lost control, “crashing into parked vehicles and striking spectators who were observing the races,” police said.

Two other children —  a 4-year-old boy and a three-month-old baby girl — were transported to Peterson Regional Medical Center for precautionary evaluations, police said.