A constable from Uttar Pradesh police helped private detectives in Delhi snoop phone call detail records (CDRs) for the latter to sell the same to their clients, Delhi police found.

Delhi Police arrested three private detectives and their accomplice last week, busting an inter-state racket that collect and sell CDRs of individuals for Rs 50,000 to Rs 5 lakh.

The gang allegedly collected CDRs for their clients from Narendra Choudhary, an Uttar Pradesh Police constable posted in the surveillance cell of the inspector general’s office in Kanpur, senior officers said on Sunday.

The cop was allegedly obtaining CDRs from nodal agencies and mobile service providers, using the official email accounts of senior UP police officers he was working with or had worked with in the past.