Great Britain's Mo Farah won his fourth Olympic gold medal as he became only the second man in history to retain the 5,000m and 10,000m titles.

The 33-year-old triumphed in the 5,000m final in Rio to extend his tally as Britain's most successful Olympic track and field athlete of all time.

Farah won in 13 minutes 3.30 seconds as Scot Andrew Butchart finished sixth.

"It shows I didn't just fluke it in London. To do it again is incredible. I can't believe it," said Farah.

Farah's was Britain's 27th gold in Rio and their 65th medal, matching the haul at London 2012.

(BBC)