The 29-year-old Frenchman, who won in Sochi four years ago, clocked 32 minutes and 51.7 seconds to take the gold, beating Sebastian Samuelsson of Sweden to second place in 33:03.7, reports Xinhua news agency.
Fourcade said: "I'm very satisfied... The sprint race was the one I wanted to win. It was the one that I have never won at the Olympics."
The six-time biathlon world cup winner said: "For me, the finish line today was on the shooting range on the last shoot and I am so satisfied that I shot clean because I spent so much energy on shooting to achieve this kind of beautiful shooting.
"And today I'm really proud and really satisfied to win my third gold in the Olympics."
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