A fireworks blast during a church festival in Dindigul injures 15 people, according to reports from Indian news outlets. The incident occurs while fireworks are being used as part of the festival celebrations. After the explosion, injured people are taken for medical treatment. The reports describe the event as a firework explosion or blast, and the number of injured is consistently given as 15 across sources. Details on the severity of injuries, the exact sequence of events, and whether anyone is reported to have died are not provided in the supplied excerpts. Authorities are not quoted in the provided text, and there is no additional information here on investigations or any arrests. The coverage focuses on the injury count and the fact that the blast happens during the festival at the location in Dindigul.