The Mumbai underworld thrives on extortion, drugs and prostitution. There are 3 or 4 major gangs, but most of them have been on the run of late namely Dawood Ibrahim the mastermind behind the Mumbai bomb blasts (said to be hiding in Karachi, Pakistan) Abu Salem (under arrest in Portugal awaiting extradition) and Chotta Shakeel (little Shakeel) who is rumoured to be somewhere in S.E. Asia, namely Malaysia.