The son of a retired senior police inspector was arrested on June 30 in an extortion case registered at Malabar Hill police station. He and an accomplice had posed as police officers and threatened to book the victim unless he paid them.

A senior police officer told mid-day that the 43-year-old prime accused, Samir Shaikh, and his accomplice entered White House building at Malabar Hill, where they threatened a man under the Narcotics, Drugs and Psychotropic Substances Act (NDPS).