The order was passed by Additional Chief Metropolitan Magistrate Shunali Gupta.
Kumar, a 1989 batch IAS oficer from the UT cadre, Deputy Secretary in Kejriwal's office Tarun Sharma, Kumar's close aide Ashok Kumar and owners of a private firm, Sandeep Kumar and Dinesh Kumar Gupta, arrested in the case, were remanded in JC till tomorrow.
It also sent R S Kaushik and his predecessor G K Nanda, present and former Managing Directors of a PSU respectively, to JC till tomorrow, asking all the seven accused to be produced before the special CBI court tomorrow which will consider the agency's plea for their police remand.
"Meanwhile, all the seven accused be sent to one day's judicial custody," the court said.
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CBI has alleged in court that Kumar, an "influential" officer, was intimidating witnesses.
According to CBI, the five accused arrested earlier were showing undue favours to Endeavour Systems Pvt Ltd (ESPL), a private firm allegedly floated by Kumar, in award of government contracts worth over Rs 50 crore.
During the hearing, CBI moved an application for further
police remand of three days' for the five accused arrested earlier and a separate plea seeking three days' police custody of the two accused arrested yesterday.
In the application, CBI submitted that their custody was required as it wanted to confront the accused arrested earlier with those nabbed yesterday.
The accused have been charged with sections 120-B of IPC (criminal conspiracy), and provisions of the Prevention of Corruption Act relating to criminal misconduct for allegedly favouring Endeavour Systems Pvt Ltd in bagging of five contracts.
This is the same case in which the agency had come under scathing criticism from court which directed it to return the documents sought by the Delhi government seized during December 15, 2015 search of Kejriwal's office.
The arrest of the top state government official had triggered a political storm with the Delhi government accusing the Centre of indulging in "political vendetta" and "paralysing" governance.