Japanese teenager Yuya Yagira was the surprise winner Saturday of the best actor award at the 57th Cannes Film Festival for his performance in "Nobody Knows."

The 14-year-old Yagira is the first Japanese to win the best actor award at Cannes and the youngest winner of the award in the festival's history.

Yagira starred in "Nobody Know," directed by Hirokazu Koreeda and based on a true story of four siblings trying to live on their own in a Tokyo apartment after being abandoned by their mother.

Yagira played the eldest of the siblings.