New Delhi, Aug. 8 -- A fireman with the Chandigarh Fire Department and a lab attendant at Delhi University's Lady Irwin College were among seven people arrested for allegedly running an interstate racket that facilitated cheating in government recruitment examinations, the Delhi Police said on Friday.

Police recovered customised mobile phones, Bluetooth devices fitted with SIM cards, nano earpieces, a tablet linked to a foreign WhatsApp account, and other electronic devices and incriminating documents. They identified 31-year-old fireman Sonu Kumar, alias Sonu Maan, as the alleged kingpin of the racket.

Deputy commissioner of police (west) Hareshwar V Swami said the investigation began after Central Sanskrit University lodged a complain...