The Enforcement Directorate raided five Delhi locations related to the 2021 Mundra drug case.
Businessperson Harpreet Singh Talwar is among those linked to the ongoing money laundering probe.
The original 2021 seizure involved 2,988.21 kg of heroin worth Rs 21,000 crore.
Evidence suggests drug proceeds were allegedly used to fund the terrorist group Lashkar-e-Taiba.