Narain Karthikeyan has been penalised for his collision with Sebastian Vettel at the Malaysian Grand Prix, dropping him to last of the classified drivers.

14051 - Karthikeyan penalised for Vettel collision

Karthikeyan and Vettel made contact on lap 48 as the Red Bull lapped the HRT, shredding the left rear tyre on Vettel's car and forcing him to make an unplanned pit stop.

The reigning champion dropped out of the points as a result and blamed Karthikeyan for the incident, saying: "As in real life, there are a few cucumbers on the road."

The FIA handed Kathikeyan a post-race drive-through penalty, which added 20 seconds to his race time and dropped him behind team-mate Pedro de la Rosa in the classification.