D.C. Mun. Regs. tit. 30, r. 30-1406
In the immediate presence of at least one other player, an authorized checker shall audibly call to the players present the numbers appearing on the winning card or cards prior to the time a winner is determined and at the same time, verify with the caller the winning numbers off of the card or cards called as winners.
When more than one (1) player is found to be the winner on the call of the same number in the same bingo game the prize shall be divided equally and rounded to the next highest dollar, except that when more than one Class D regular bingo license player is found to be the winner on the call of the same number in the same bingo game the prize shall be divided equally and rounded to the next highest cent.
Each bingo winner shall be determined and every prize shall be awarded and delivered at the conclusion of each bingo game.
D.C. Mun. Regs. tit. 30, r. 30-1406