Williams-Mercedes driver Felipe Massa has hit out at Max Verstappen for causing a "dangerous" accident at the Monaco Grand Prix.
The Toro Rosso driver drove into the back of Romain Grosjean down the pit-straight and flew into the barriers, in an accident which has earned the 17-year-old a five-place grid penalty for the Canadian Grand Prix in two weeks.
Massa told reporters: "I would say what for me was pretty dangerous was the accident with Verstappen. He's supposed to get a penalty for what he did. He braked behind, much later and what happened was very dangerous.
"It shows maybe that experience counts in Formula 1 and I think to teach about this type of accident, they need to control better because it was very dangerous. He is lucky he was not hurt. He could have been very hurt after what happened."
Verstappen is the youngest driver in F1 history.
