A lawyer on Monday approached the Mumbai police with a complaint seeking registration of an FIR against Narcotics Control Bureau (NCB) zonal director Sameer Wankhede and five others on charge of alleged extortion in connection with the drugs-on-cruise case, an official said.

According to the official, lawyer Sudha Dwivedi submitted the written complaint at the MRA Marg police station and also to offices of Joint Commissioner of Police (Crime) Milind Bharambhe and the state Anti-Corruption Bureau. In the complaint, Dwivedi has demanded registration of FIR against Wankhede and five others, including NCB witnesses in the drugs case Prabhakar Sail and KP Gosavi, and a person named Sam D'Souza over alleged extortion charge.