15 people were injured in a cylinder blast at Dharavi in Mumbai on Sunday. Mumbai police, civicĀ and fire brigade teams were rushed to the spot. The blast took place at 12:28 pm on a tenement off the Mubarak Hotel at Shahu Nagar in Dharavi. Of the five persons who have suffered critical injuries in the incident, one is an eight-year-old boy, the fire brigade official said.