In another heroic effort, the Mumbai Fire Brigade rescued more than 40 persons trapped on the terrace of a building which caught fire here on Tuesday morning, officials said.

The conflagration is said to have erupted in the electric metre room on the ground floor of an old seven-storied MHADA building in Jankalyan Nagar in Kandivli west suburb around 10.15 a.m., according to BMC Disaster Control.