Updates of all the important action from race day at the Bahrain Grand Prix.
World champion Sebastian Vettel started from pole position for Red Bull, with McLaren's Lewis Hamilton second and Vettel's teammate, Mark Webber, third.
Final top 10:
1. Sebastian Vettel (Red Bull)
2. Kimi Raikkonen (Lotus)
3. Romain Grosjean (Lotus)
4. Mark Webber (Red Bull)
5. Nico Rosberg (Mercedes)
6. Paul di Resta (Force India)
7. Fernando Alonso (Ferrari)
8. Lewis Hamilton (McLaren)
9. Felipe Massa (Ferrari)
10. Michael Schumacher (Mercedes)
FINISH: VETTEL WINS THE BAHRAIN GP, WITH LOTUS SECOND AND THIRD THROUGH RAIKKONEN AND GROSJEAN RESPECTIVELY.
Lap 56: Just over a lap to go and Vettel looks to have the victory sewn up, as McLaren retire Button.
Lap 54: Button makes a surprise stop. It's a rear puncture for the Englishman! He will not score points today.
Lap 54: Button is now hunting di Resta, as Vettel leads Raikkonen by almost three and a half seconds.
Lap 52: Rosberg out-brakes di Resta into Turn 1, before fending off the Scot's attempted response.
Lap 50: Rosberg looks set to take fifth place off the two-stopping di Resta. Up front, Raikkonen is 3.2 seconds behind Vettel.
Lap 47: Raikkonen is making slight inroads into Vettel's lead and is now under three seconds behind.
Lap 45: Schumacher is up to 11th after starting 22nd on the grid. The Mercedes racer has just passed Kobayashi.
Lap 41: Hamilton's very disappointing afternoon takes a little turn for the better, as he overtakes Kobayashi for ninth place.
Lap 40: Vettel and Raikkonen make their last pit stops, as Vettel comfortably retains the lead.
Lap 37: Button comes in for his final stop. Most have now completed their pit visits for the day.
Lap 37: Rosberg and Hamilton pit.
Lap 36: Vettel fights off Raikkonen at Turn 1 in the battle for the lead of the race, but the Finn looks very quick in his Lotus.
Lap 34: Raikkonen is now right on Vettel's tail, as di Resta pits.
Lap 33: Button slipstreams his way past di Resta and takes fifth place.
Lap 31: Rosberg gets past Kobayashi for seventh place. The Sauber man then pits.
Lap 30: Vettel holds a two-second lead over Raikkonen at the front.
Lap 26: Maldonado has a spin as, just ahead, Rosberg forces Alonso off track in the battle for eighth.
Lap 25: Leader Vettel pits and comfortably retains the lead, as Grosjean pits too.
Lap 24: Hamilton has more pit-stop woes. And the left rear is the problem again.
Lap 24: Raikkonen goes up the inside of Grosjean in the battle of the Lotus men and takes second place.
Lap 23: Button pits for his second stop from fifth place. Rosberg and Massa also come in.
Lap 21: There has just been some superb racing in the battle over tenth place, with di Resta forcing his way back into the points for now.
Lap 19: Vettel leads by just over five seconds from Grosjean, who is a second ahead of his Lotus teammate.
Lap 15: Di Resta, on a two-stop strategy it seems, pits and drops outside of the top 10.
Lap 13: Vettel takes the lead back off di Resta, who has yet to stop.
Lap 11: Hamilton is involved in some stunning racing with Rosberg, as the Englishman takes to the sand to pass the Mercedes.
Lap 10: Hamilton is delayed in his pit-stop as Webber takes over third place.
Lap 9: Raikkonen opens up his rear wing and eases past Alonso for fifth place, as the pit-stop mayhem begins.
Lap 7: Grosjean overtakes Hamilton for second. The Lotus man is flying and will now set about chasing down the leader.
Lap 6: Vettel is powering away at the front of the pack.
Lap 3: Grosjean takes third from Webber.
Lap 1: Rosberg had a poor start and is down to ninth.
Lap 1: Vettel gets away well from pole. Hamilton retains second, Webber stays third. Grosjean up to fourth, Alonso to fifth.
13.00: The cars begin the formation lap.
12.50: Just 10 minutes to go until the drivers set off on their formation lap. it should be an exciting race to the first corner between the two Red Bulls and the McLaren pair.
12.30: With a half an hour to go until the start of the race, there is some light rain falling around the paddock.