The FIA are to investigate the sequence of calls that led to a 4x4 fire vehicle entering the track in front of the leaders during the Korean Grand Prix.

The governing body has since taken responsibility for the call though admitted it's surprise when a vehicle at turn one was sent onto the track to Mark Webber's car which was on fire at turn three.

The whole sequence of events was caused after Adrian Sutil slammed into the side of Webber at the third corner following the first safety car period.

The Red Bull suffered a burst oil radiator which then ignited on the hot bodywork and burned for a few minutes before the Korean marshals finally arrived with extinguishers. With marshals struggling to contain the fire, race director Charlie Whiting called for a specialist fire truck to be sent to be scene.

To the surprise of everyone the vehicle was seen heading down the long straight between turn two and three as the leading cars came round, this caused a second safety car period.

Speaking about the incident Vettel said post race: "It wasn't quite clear that it was the safety car but then the safety car board was flashing and I lifted... and obviously saw that there was
another car on the track."

The Korean officials will report back to the FIA about the incident, though because the correct procedure of the marshals waving a white flag to signify a slow vehicle on the track, sanctions are unlikely.

Red Bull boss Christian Horner said there would need to be lessons learnt from the incident and say it was good the leading cars caught the truck where they did.

"It wasn't great, but thankfully it happened on part of the track where there was plenty of time for the drivers to react," he said.

"Sebastian was the first to come across it, but with the straight being so long there he thankfully had enough pre-warning to know that he was there.

As for the charred Red Bull, Horner said the team does carry a spare chassis with them on the flyaway races so should Webber's car from Korea be unfit for Japan next week that car will be used.

"We carry a spare chassis and all the spare components that go with it, but we need to see what the damage is and whether the car is badly wounded or whether it is repairable." he said.

"But if it had been unsighted it would have been a bit more dramatic."

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