They said the agency will probe the possible "proceeds of crime" as part of its charter under the anti-money laundering law and soon will issue summonses to the accused.
A meeting of Enforcement Directorate (ED) and Delhi police officials has taken place recently and it is expected that after the central probe agency registered a separate case, a few more such meetings could be held to take the probe forward.
Mr Dinakaran and his aide Mallikarjuna were sent to the Tihar Jail till May 15 by a Delhi court yesterday after the police said that the accused were not needed for custodial interrogation.
Mr Dinakaran was arrested on April 25 after four days of questioning by the Delhi police for allegedly attempting to bribe an unidentified EC official to get the AIADMK's 'two leaves' election symbol for his faction for a by-election to the RK Nagar Assembly seat in Tamil Nadu which was later cancelled by the Election Commission. The EC had frozen AIADMK's 'two leaves' symbol after two factions led by Sasikala and former chief minister O Panneerselvam staked claim to it.
The court had on April 26 remanded the duo to five-day custody of Delhi Police which said it needed to unearth the money trail and the entire conspiracy in the case.
Mallikarjuna, who had been accompanying Mr Dinakaran everywhere ever since the arrest of alleged middleman Sukesh Chandrasekar on April 16, was arrested for facilitating the alleged Rs 50-crore deal between Mr Dinakaran and Chandrasekar.
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