World champion Sebastian Vettel has set the pace for the Singapore Grand Prix after topping both practice sessions.

The Red Bull driver, who secured the quickest time around the track this morning, stormed into the garage by three tenths of a second faster than McLaren's Jenson Button.

Ferrari driver Fernando Alonso recorded the third-quickest time on the circuit for the only race during the season that is held at night, while Vettel's teammate Mark Webber was the fourth-fastest.

Lewis Hamilton, who won the Italian Grand Prix, completed the track in the fifth-best time of the session.

1. Sebastian Vettel
2. Jenson Button
3. Fernando Alonso
4. Mark Webber
5. Lewis Hamilton
6. Paul Di Resta
7. Nico Hulkenberg
8. Nico Rosberg
9. Felipe Massa
10. Romain Grosjean