"After yesterday's incident during the Moto3 World Championship race ... at the Barcelona-Catalonia circuit we regret to announce the death of Andreas Perez Manresa," organisers said in a statement.
"Devastated by the death of driver Andreas Perez. Difficult to come to terms with the death of someone so young," tweeted Spanish Prime Minister Pedro Sanchez.
Conmocionado por la muerte del piloto Andreas Pérez. Difícil el consuelo ante la pérdida de alguien tan joven. Nuestro cariño y nuestro apoyo para su familia y amigos.— Pedro Sánchez (@sanchezcastejon) June 11, 2018
Perez crashed on a bend and was airlifted to hospital with serious brain injuries according to his team Reale Avintia and was declared clinically dead shortly afterwards.
His death is the third at the circuit in two years after Enric Sauri during the Catalonia 24 Hours last July and Luis Salom during free testing in June 2016.