New Delhi: Bharat Rashtra Samithi (BRS) leader K Kavitha, allegedly a key member of the "South Group", which has been accused of paying the ruling Aam Aadmi Party kickbacks of Rs 100 crore in return for a big share of liquor licences in the national capital, was on Saturday remanded in ED custody till March 23 in a money laundering case linked to the Delhi excise policy "scam".