Red Bull driver Isack Hadjar crashed his car in wet conditions on the second day of Formula 1 pre-season testing in Barcelona.
The 21-year-old Frenchman, promoted to the senior Red Bull team for 2026 after just one season in F1, lost control at the fast final corner and hit the barriers.
The test is being held in private with no access for independent media, and Red Bull have not responded to requests for comment on the incident.
But eyewitnesses at the Circuit de Barcelona-Catalunya say Hadjar was on his first lap on a set of intermediate tyres having just switched from full wet tyres.
The track was still damp and the weather was drizzly when he went off, spinning and hitting the barrier backwards.
Team principal Laurent Mekies said: “It was very tricky conditions this afternoon, so very unfortunate that it finished that way, but it’s part of the game.
“These difficulties came after a very, very positive day yesterday in terms of the number of laps Isack could complete in the car, and in terms of his learning and development and feedback to the engineers.
“We will try our best to repair the car and see what’s coming next.”
Until then, Red Bull had continued their encouraging progress of the first day, and Max Verstappen had had his first run in the car in the morning session.
The four-time champion had an off at Turn Five on his first lap out of the pits but was able to rejoin.
Red Bull have only one further day of running permitted to them under the rules of the test, having been out on track on both days so far.
The weather forecast meant only Red Bull and Ferrari ran on Tuesday – teams are limited to three of the five days this week.