An FIR registered here pertaining to alleged illegal gambling and cyber fraud worth Rs 15,000 crore linked to Mahadev betting app has been transferred to the Mumbai crime branch for investigation, an official said on Thursday. Considering the scope of probe into the case, Mumbai Police Commissioner Vivek Phansalkar has transferred it to the crime branch, he said. The FIR was registered earlier this month at Matunga police station in Mumbai against 32 people, including the "promoter" of the app Saurabh Chandrakar, Ravi Uppal, Shubham Soni and others for allegedly committing the fraud since 2019, police earlier said.