The Enforcement Directorate on Saturday conducted raids on senior Congress leader P. Chidambaram's son Karti's properties in Delhi and Chennai in connection with the INX Media money laundering case.

The raids were being conducted at one location in Delhi and four in Chennai.

The agency on Thursday issued fresh summons to Karti Chidambaram in a money laundering case related to alleged irregularities in getting foreign investment for the INX Media in 2007.

The ED had registered a money laundering case against the former Finance Minister's son in May 2017.

The Central Bureau of Investigation (CBI), which separately probing how INX Media got a clearance from Foriegn Investment Promotion Board (FIPB). The CBI FIR also name INX Media directors, Peter and Indrani Mukerjea -- both accused in the Sheena Bora murder case.

Karti is facing a probe for his alleged role in facilitating the FIPB's clearance for INX Media when his father was the Union Finance Minister.

Karti is alleged to have received Rs 3.5 crore from Mumbai-based INX media, now 9X Media, for helping it get the FIPB clearance when it was run by the Mukerjeas.

The ED, which is probing financial misappropriation in the case, has contended that Mukerjeas had "allegedly siphoned off 90 million pounds and the money is suspected to have gone to foreign countries through hawala routes".

Following the FIPB clearance, the INX Media said it had received Foreign Direct Investment (FDI) of Rs 46.20 million, but actually received Rs 3,053.60 million between August 2007 and May 2008, the ED said.

Accordingly, this excess foreign exchange equivalent to Rs 3,004.40 million, beyond the disclosed the permitted foreign investment, was received by INX Media from three Mauritius-based investors, said the ED.