Special Judge Sangita Dhingra Sehgal sent Amar Singh as well as Fagan Singh Kulaste and Mahavir Singh Bhagora to judicial custody till Sep 19.
Singh made a surprise appearance in a Delhi court, hearing the case. Earlier in the day, Singh was denied bail.
A police spokesman said that he was taken into custody after the special Judge sent him to Tihar jail for 14 days. He has been chargesheeted by Delhi Police after Supreme Court expressed displeasure over the probe in the cash for vote scam.
The court also rejected bail to former BJP MPs Faggan Singh Kulaste and Mahabir Singh Bhagora, who too appeared before the court responding to its summons for their alleged role in the scam.
Showing his medical reports, Singh made a fervent plea to the court to grant him bail saying that he has only recently undergone a kidney transplant in Singapore and required intensive round the clock medicare.
However the judge, after going through the medical reports submitted by Singh, said the documents do not show his medical history after September 2010.
Personally arguing his case for over five minutes, he said he has also developed infection in his urinary tract for which he has to visit Singapore for tests every three months, besides being in constant touch with doctors.
“I lost my kidneys and I am now living on borrowed kidneys. There are hazards of being in public life and there is infection in my urinary track which is dangerous for my borrowed kidney,” said Singh.