That’s what came to my mind, too. Unless the brothers are illegals or have criminal records, why withhold their names?
Is “Dhaliwal” an Irish name? There is more to this story.
There is certainly some reason they won’t cooperate, and wouldn’t even from the start. Illegal activity, illegal immigration status, or who knows, with names like theirs, maybe even terrorist wannabes who view any cooperation, even to save their own sorry lives, as giving in to the enemy.