Around 10 people were injured after a balloon containing a suspected flammable chemical burst during a theatrical performance in Bihar’s Siwan district on Tuesday night, authorities said. The incident occurred in Rasulpur village during a play organized as part of Durga Puja celebrations.

According to initial reports, the balloon was used by actors in a scene involving fire when it unexpectedly ruptured, releasing the substance and affecting both performers and audience members seated near the stage. The sudden burst caused panic among the large crowd gathered to watch the show.

Local residents quickly came to the aid of the injured and arranged for their transport to Barharia Referral Hospital, where they received medical treatment. Two of those affected were reported to be in critical condition, officials added.

Police in Siwan have opened an investigation and are collecting statements from villagers and those injured to determine the exact circumstances of the incident. The nature of the chemical used in the balloon remains under examination.