Final answer:
A man in the employ of the event's narrator fired a musket without a ball into a crowd during the Manberg Festival, causing a panic but no physical harm.
Step-by-step explanation:
During the Man berg Festival, the disturbance and panic were caused by frantic behavior of a man with a musket. This man, who was later understood to be in the pay of the person recounting the event, fired his weapon into a crowd, causing a panic. However, it was soon discovered that the musket had been fired without a ball, indicating the shot was intended to create chaos rather than injure. The individual responsible was dismissed as a lunatic or dru nkard and was allowed to leave without further consequence.