The Spanish racing federation said an 11-year-old boy has died from injuries sustained in a karting crash at Fernando Alonso’s track in northern Spain.
The federation said Gonzalo Basurto Movila died after a crash during a private practice session Saturday. He had been hospitalized since the crash but died early Sunday.
Spanish media said Movila’s kart flipped and landed on top of him.
Spain’s racing federation said the accident was being investigated.
Two-time Formula One champion Alonso tweeted that he was “devastated” by the news of the boy’s death and said it is “one of the saddest days.”
Alonso was set to discuss his decision to race in the Indianapolis 500 next month during a news conference Sunday.
Despierto de madrugada en uno de los días más tristes. Destrozado. Desde aquí, un abrazo enorme a la familia de Gonzalo y a todo el Karting.
— Fernando Alonso (@alo_oficial) April 23, 2017
The AP contributed to this report. © 2017 The Associated Press.