Manama: Shaikh Faisal Bin Hamad Al Khalifa, the sixth son of His Majesty King Hamad Bin Eisa Al Khalifa, died on Thursday in a car accident near Safriya, 20 km south of Manama.
Faisal, 15, was a prominent figure in the kingdom's equestrian and maritime sports and played a leading role in the World Junior Endurance Championship in Bahrain last month.
At the latest National Day celebrations, he presented the awards to the winners of the Omega J24 Match Racing Sailing Championship.
Shaikh Faisal was killed in a "regretful accident late Thursday," according to a statement by the royal court published by the state news agency BNA.
He will be buried early on Friday, it said.
Bahrain television and radio stations interrupted their regular programmes in late afternoon to broadcast clerics reading verses of the Holy Quran.
King Hamad has seven sons Salman, Abdullah, Khalifa, Nasser, Khalid, Faisal and Sultan and four daughters.