Welcome to live coverage of first practice for the Turkish Grand Prix in Istanbul.

Rosberg with a quick last effort but remains second. And that signals the end of the session.

Hamilton tries to come out at the very end of things but has to pull over - mechanics run to rescue the McLaren.

Schumacher off again, this time at turn 11 - many cars have been aquaplaning around that one.

Maldonado and Di Resta have moments at turns 11 and nine respectively.

Schumacher goes off at turn eight like Vettel but manages to coax the car back on to the track.

McLaren's Britons not looking likely to re-emerge. Neither Hamilton nor Button have set a lap-time.

Karthikeyan is back out after his early problems. Hopefully he will be able to complete a few laps.

Formula One teams must stick together in discussions about the sport's future ownership and direction, Renault team boss Eric Boullier has said.

Schumacher returns to the fray. He goes P3 with 1:40.330.

The FIA technical delegate has joined the Red Bull team in the garage. Is there something to interest him about the car?

Light rain still falling as Alonso heads out on full wets.

A mechanic carries bits of the front wing back by hand as the covered RB7 is wheeled back into the garage.

Vettel, who said sorry to his team over the radio, returns to the pits to discuss what happened with them.

Perez and Kobayashi first back out now that the track is safe again.

The session will restart in two minutes.

Marshals are clearing the track of muck thrown on when Vettel left the tarmac.

The process of shifting the Red Bull is a laborious one. The seconds tick away as the flatbed truck begins its work.

There is debris on the track. Understandably Vettel, who was on intermediate tyres, looks annoyed.

The German is fine but his RB7 is not. The red flags are out - damage to the front.

Vettel crashes! He loses the Red Bull and that is a heavy impact with the barriers!