What is the effect of interference by a spectator on a batted ball?

When a spectator interferes with a batted ball, the effect of their interference is to cause the ball to be ruled dead. This means that the play is interrupted and cannot continue. In this situation, since the interference occurs at the hands of an outside party, the game officials will ensure that no players are awarded bases or counted as runners due to this specific incident of interference. The intent is to maintain the integrity of the game and ensure that players are not negatively affected by external elements beyond their control. Thus, the play is stopped, and the situation is reset without benefiting the offensive or defensive team.