A four-month-old boy, who was injured in a fire that broke out following a cylinder blast at a chawl in Worli area of Mumbai, died during treatment at a hospital, while his father, who had also suffered injuries in the incident, is in a critical condition, civic officials said.

The child and three other members of his family were injured in the blaze that had erupted on November 30 after the cylinder blast in a room at BDD chawl (tenement) located on Ganpatrao Jadhav Marg. All of them were initially rushed to the civic-run BYL Nair hospital for treatment, but later on the child and two other members were shifted to the Kasturba Hospital, another civic-run medical facility, a municipal official said.