India, Oct. 10 -- Who is someone calling? Where have they been? Whom have they been meeting or having an affair with? Information that should remain private was obtained for a price by a racket operating with the help of police personnel, the Mumbai Crime Branch has found while busting an illegal trade in confidential mobile phone data.

The racket allegedly procured and sold Call Detail Records (CDRs), Subscriber Details Records (SDRs) and mobile tower locations, allowing clients to track people's movements and contacts. Seven accused have been arrested while two police constables posted in Jharkhand and Bihar have been booked.

The Crime Branch seized 50 CDR records, data pertaining to 520 subscribers, 550 location records or tracking i...