Azad was accompanied by state Congress president E V K S Elangovan and the party's Tamil Nadu in-charge Mukul Wasnik.
Fruitful talks could result in the two former allies joining hands after a gap of three years when DMK snapped ties with Congress over the Sri Lankan Tamil issue.
The DMK leader had invited Congress and DMDK as part of his efforts to cobble up a strong alliance against the Jayalalithaa-led AIADMK.
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