The fire brigade got a call at 7.14 am about the blaze in the court building, located near the campus of the Mumbai University in the southern parts of the city, the official of the Brihanmumbai Municipal Corporation's (BMC) disaster management unit said.
Once the fire was brought under control, the cooling and cleaning operations were undertaken.
According to reports, the fire started at a generator in the studio.
Fortunately, no casualties have been reported in the incident.
Fire officials said prima facie the cause of the fire appears to be the ongoing welding work being done by the Public Works Department (PWD) department.
Seven fire engines and four water tankers were rushed to the studio to control the fire. Electrical wiring inside the studio caught fire first, fire brigade officials said.
On December 28, 14 people were killed and over a dozen injured after a fire broke out in two rooftop pubs in the city's Kamala Mills compound in Lower Parel locality. There were about 150 people trapped inside who were successfully rescued.
According to reports, proceedings inside the court are expected to be affected as the upper portion of the third floor has been badly affected in the fire.