Get latest articles and stories on India at LatestLY. Based on specific inputs, STF Kolkata Police busted a major Simbox network, operating across 4 places in Kolkata under Karaya, Tala, Purba Jadavpur, and Ekbalpur Police Station (PS) jurisdictions, said an STF official. India News | Kolkata STF Busts Illegal SIM Box Network Racket, 3 Arrested.