LUCKNOW, Dec. 8 -- The interrogation of two accused brothers of Saharanpur, Vibhor Rana and Vishal Singh, who allegedly operated one of the largest codeine-based cough syrup diversion networks in northern India, has led to key disclosures, senior UP Special Task Force (STF) officials said.

According to investigators, the accused revealed a multi-state nexus involving shell firms, forged drug licences, and alleged collusion with certain pharmaceutical company officials to channel regulated medicines into illegal trafficking routes. Investigators allege that Vibhor Rana and Vishal Singh amassed around Rs.200 crore in illegal assets from Phensedyl diversion.

The seizure in Ghaziabad involving stock linked to AB Pharmaceuticals was traced t...