The CBI arrested businessman Vijay Nair on Tuesday in connection with the Delhi Excise Policy scam case in which Deputy Chief Minister Manish Sisodia is also an accused, officials said.
Nair, who was abroad for quite some time, was called for questioning at the agency office on Tuesday, they said.
Sources said Nair was arrested for his alleged role in "cartelisation" and "conspiracy" related to alleged irregularities in the allocation of liquor licence in the national capital.
The FIR has alleged that Arjun Pandey, an associate of Sisodia, had once collected about Rs 2-4 crore in cash from liquor businessman Sameer Mahendru on behalf of Nair, former CEO of Only Much Louder, an entertainment and event management company.