The ED action comes close on the heels of the Central Bureau of Investigation filing a chargesheet against him and his wife and others for allegedly amassing assets worth around Rs 10 crore disproportionate to their known sources of income.
Officials said the agency has issued fresh summons to Singh as it wants to record his statement under the Prevention of Money Laundering Act.
They said he has been asked to depose before the Investigating Officer of the case on April 13 in New Delhi.
The agency has summoned Singh earlier too but then he had excused himself stating his official commitments.
It has already questioned his wife Pratibha and son Vikramaditya in this case.
The ED had filed a case under criminal provisions of the anti-money laundering law against the CM, his family members and others after taking cognisance of a complaint filed by the CBI in this regard in September, 2015.
The agency is probing allegations against Singh and his family members of having amassed wealth of Rs 6.1 crore disproportionate to his known sources of income between 2009 and 2011 when he was the Union Minister of Steel.
It has also attached assets worth about Rs 14 crore in this case under PMLA laws.
The CBI chargesheet, filed recently, claims that the politician had amassed assets worth around Rs 10 crore which were disproportionate by 192 per cent of his total income during his tenure as a Union minister.
The final report filed against nine people for alleged offences punishable under Section 109 (abetment) and 465 (punishment for forgery) of the Indian Penal Code and Prevention of Corruption Act, arrayed around 225 witnesses and 442 documents.
Besides the 82-year-old Congress leader and his wife Pratibha Singh, the report also arraigned Chunni Lal Chauhan, Joginder Singh Ghalta, Prem Raj, Vakamulla Chandrasekhar, Lawan Kumar Roach and Ram Prakash Bhatia as accused.
The report also named as accused Life Insurance Corporation agent Anand Chauhan, who is currently in judicial custody. Chauhan was arrested by the ED on July 9 last year in a separate money laundering case related to the present case.
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