The CBI has summoned former Kolkata Police Commissioner Rajeev Kumar to appear for questioning on Saturday in connection with its probe into the Saradha scam, officials said.
The agency served notices to Mr Kumar after the Calcutta High Court withdrew his protection from arrest on Friday.
A team of CBI officials reached his residence to serve the notice, the officials said.
Mr Kumar, who is currently the West Bengal CID Additional Director General, was part of a special investigation team set up by the West Bengal government to investigate the scam before the Supreme Court handed over the case to the CBI in 2014, along with other chit fund cases.
The Saradha group of companies allegedly duped lakhs of people to the tune of Rs 2,500 crore, promising higher rate of returns on their investments.
In May, the Supreme Court declined to entertain his petition seeking extension of protection from arrest in the multi-crore Saradha scam case.
He was granted protection from arrest on May 17 by the top court for seven days and he had filed a fresh petition seeking to restrain the CBI from taking any coercive action against him.
However, a vacation bench headed by Justice Arun Mishra had said Mr Kumar's plea was not "maintainable" as a bench headed by Chief Justice of India Ranjan Gogoi had already passed an order in the matter on May 17 and the IPS officer should not have filed a fresh writ petition.
The bench, also comprising justices B R Gavai and Surya Kant, said that Rajeev Kumar can personally approach the Calcutta High Court or the trial court seeking relief in the case.
But on Friday, the Calcutta High Court vacated its interim order granting the former police commissioner protection from arrest.
The court also rejected Mr Kumar's prayer for quashing of a CBI notice that sought his appearance for questioning in the case.
Railway Official Loses Rs 9 Lakh Online As Fraudsters Pose As CBI Men "Can Trigger Narrative": Veep After Top Court's CBI "Caged Parrot" Remark 'Caged Parrot' Tag Returns To Haunt CBI After Supreme Court's Bail To Arvind Kejriwal 3 Grams Of Explosives Per Pager: Israel's Complex Op To Hurt Hezbollah What Is A Pager And Why Hezbollah Still Relies On This Outdated Device "Wear Proper Undergarments": Delta Airlines' New Memo For Flight Attendants Sri Lanka Polls: Frontrunners, What's At Stake, Implications For India 2024 Hyundai Alcazar Facelift Review: Fortified for the Family! Opinion | Should We Be Worried About Unemployable Human Bots? Track Latest News Live on NDTV.com and get news updates from India and around the world.