It was named after Bilal ibn Rabah, a Sahabah (companion) of Prophet Muhammad (PBUH) and the first muezzin (reciter of Adhan).
More than 250 contenders from Senegal, Mauritania, and Gambia competed for the top prize, al-Akhbar.info website reported.
A 12-year-old Mauritanian named Muhammad Abdul Ja won the top prize.
The following footage features his Adhan recitation at the competition: