The Income Tax department conducted raids on 74 locations linked to Saravana Stores and the Lotus group on Friday morning.
Seventy-two of these locations are in Chennai, and the two others are in Coimbatore.
Saravana Stores is a popular retail chain in Tamil Nadu. Its owner, Yogirathinam Pondurai, is under the I-T radar.
Sources in the I-T department said the searches were based on a tip-off reagrding tax evasion and unaccounted money.
The Saravana Stores outlet in Chennai’s Panagal Park was closed for the day.
On January 3, the I-T department raided some of Tamil Nadu’s best-known eateries, including Hot Breads, Grand Sweets and Snacks and Anjappar.
Officials said the homes and offices of directors of the food chains were being raided by a team of over 100 I-T sleuths.